How to apply the triangle proportionality theorem to determine the missing side

The video tutorial explains how to apply the triangle proportionality theorem to solve a problem involving ratios. The instructor sets up the problem, identifies the given values, and demonstrates how to use cross multiplication to find the unknown value TQ. The process is explained step-by-step, ensuring that students understand the application of the theorem and the calculation involved.

Explain the process of cross-multiplying in the context of this problem.

What final value is obtained for TQ after applying the ratios?