The triangle for this question has been attached.
Answer:
LI = 18
Explanation:
From ratio of corresponding sides of a triangle, we know that from the attached image, we can say that;
JK/KH = JL/LI
We are given;
JK = 7
KH = 21
JL = 6
Plugging in relevant values, we have;
7/21 = 6/LI
Making LI the subject, we have;
LI = 21 × 6/7
LI = 18