A.) 14.1

B.) 15

C.) 16.7

D.) 17.3

E.) Cannot be determined from the given information

**If the ratio of the side lengths of the first triangle is 7:11:13, and the second triangle is similar to the first, then a proportion can be created.**

**The shortest side of the second triangle is 9 inches.**

7/13 = 9/x {compared smallest to largest in first triangle and smallest to largest in second triangle, and set them equal, creating the proportion}

7(x) = 13(9) {cross-multiplied}

7x = 117 {multiplied 13 by 9}

x ≈ 16.7 {divided each side by 7 and rounded to the nearest tenth}

the longest side is

**C.) 16.7 inches**

*Ask Algebra House*