Question

the figures below are similar. use proportions to find the length of x. 15 x 10 12 x = ?

Explanation:

Step1: Set up proportion

Since the figures are similar, the ratios of corresponding sides are equal. So we have $\frac{15}{10}=\frac{x}{12}$.

Step2: Solve for x

Cross - multiply: $10x = 15\times12$. Then $10x=180$. Divide both sides by 10: $x=\frac{180}{10}$.

Answer:

$18$