Three sides of a triangle measure 3, 4, and 5. Solve for the length of the shortest side of a similar triangle whose longest side has a length of 20. (1 point)

12
4
16
20

The given triangle has side lengths of 3, 4, and 5. Since these side lengths are in a 3:4:5 ratio, we can determine that the sides of the triangle are in the proportion of 3:4:5.

To solve for the length of the shortest side of a similar triangle with a longest side of 20, we need to find the proportion between the longest sides.

The proportion between the longest sides of the two triangles is:

20 / 5 = x / 3

Cross-multiplying, we get:

5x = 60

Dividing by 5, we find:

x = 12

Therefore, the length of the shortest side of the similar triangle is 12. Answer: <<12>>12.