SOLUTION: Triangle ADE is proportional to Triangle ABC. The length of DE is 20 ft.; the length of AB is 6ft. and the length of BC is 8 ft. What is the length of AD ?

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Question 756165: Triangle ADE is proportional to Triangle ABC. The length of DE is 20 ft.; the length of AB is 6ft. and the length of BC is 8 ft. What is the length of AD ?
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
From the two triangles ADE and ABC
Sides CB/ED = AB/ED
8/20 = 6/x
Cross multiply
8x = 120
x = 120/8
x = 15
Length of AD is 15ft.
Hope this helps.
:-)