Finding the Fourth Proportional to 20,986,361.35, 28,960,414.08 and 11,693,451.26
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Solution
The fourth proportional to 20,986,361.35, 28,960,414.08 and 11,693,451.26 is: 16,136,536.72
Step by Step Solution
- Step 1: Write the proportion equation
20,986,361.35 : 28,960,414.08 = 11,693,451.26 : x - Step 2: Convert to fraction form
20,986,361.35/28,960,414.08 = 11,693,451.26/x - Step 3: Cross multiply
20,986,361.35x = 28,960,414.08 × 11,693,451.26 - Step 4: Simplify right side
20,986,361.35x = 338,647,190,542,448.31 - Step 5: Solve for x
x = 338,647,190,542,448.31/20,986,361.35 - Step 6: Final answer
x = 16,136,536.72
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.