i need help finding the answers for these 2 questions

19 . The diagram is given .
Use the ratio of any pair of the corresponding sides to find x.
To find the value of x.
[tex]\frac{8}{12}=\frac{6}{x}[/tex][tex]\frac{2}{3}=\frac{6}{x}[/tex][tex]2x=18[/tex][tex]x=9[/tex]Hence the value of x is 9.