document.write( "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 ?
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #460114 by Cromlix(4381)\"\" \"About 
You can put this solution on YOUR website!
From the two triangles ADE and ABC
\n" ); document.write( "Sides CB/ED = AB/ED
\n" ); document.write( " 8/20 = 6/x
\n" ); document.write( "Cross multiply
\n" ); document.write( " 8x = 120
\n" ); document.write( " x = 120/8
\n" ); document.write( " x = 15
\n" ); document.write( "Length of AD is 15ft.
\n" ); document.write( "Hope this helps.
\n" ); document.write( ":-)
\n" ); document.write( "
\n" );