Finding the Fourth Proportional to 21,569,536.72, 29,766,695.16 and 12,756,542.68
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Solution
The fourth proportional to 21,569,536.72, 29,766,695.16 and 12,756,542.68 is: 17,604,463.28
Step by Step Solution
- Step 1: Write the proportion equation
21,569,536.72 : 29,766,695.16 = 12,756,542.68 : x - Step 2: Convert to fraction form
21,569,536.72/29,766,695.16 = 12,756,542.68/x - Step 3: Cross multiply
21,569,536.72x = 29,766,695.16 × 12,756,542.68 - Step 4: Simplify right side
21,569,536.72x = 379,720,117,251,089.44 - Step 5: Solve for x
x = 379,720,117,251,089.44/21,569,536.72 - Step 6: Final answer
x = 17,604,463.28
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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.