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The problem asks to find a number that, when paired with 21, creates a ratio equivalent to 3:14. 

This means we need to find a number \( x \) such that:

\[
\frac{3}{14} = \frac{x}{21}
\]

To solve for \( x \), we can cross-multiply:

\[
3 \times 21 = 14 \times x
\]

\[
63 = 14x
\]

Now, divide both sides by 14:

\[
x = \frac{63}{14} = 4.5
\]

So, the number \( x \) that makes the ratio equivalent to 3:14 is **4.5**.

Would you like further details or explanations?

Here are some related questions you might find useful:
1. How do you simplify a ratio?
2. What is the method to convert a ratio into a fraction?
3. Can a ratio be represented as a decimal or percentage?
4. How do you scale a ratio up or down?
5. What are real-life examples where ratios are commonly used?

**Tip:** When solving ratio problems, cross-multiplication is a reliable method to find an unknown term.

Find the number that makes the ratio equivalent to 3:14 with 21.

This problem helps you solve for an unknown number that makes the ratio equivalent to 3:14 when paired with 21. Learn how to use cross-multiplication to find the answer. Suitable for Grades 6-8.

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