does anyone know how to solve for a side of a scalene triangle when given two similar triangles? I have in front of me two scalene triangles. one is bigger than the other. the smaller one has the sides 4, 8, and 10. the bigger triangle has the sides x, 15, and 12. i believe this to be simple stuff, but i have mono and havent been in school for four weeks and cannot for the life of me remember how to do this.