Question

A set of the proportion that will find the missing side of the following pair of similar triangles

Answer 1

From the information given, triangle ABC is similar to triangle DEC

This means that

AB/DE = BC/EC = AC/DC

Given that AB = 3, BC = 4 and CE = 14, it means that

3/DE = 4/14

By cross multiplying, it becomes

3 * 14 = 4 * DE

42 = 4DE

DE = 42/4

DE = 10.5