Finding the Fourth Proportional to 21,513,343.68, 29,687,550.43 and 11,723,579.21
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Solution
The fourth proportional to 21,513,343.68, 29,687,550.43 and 11,723,579.21 is: 16,178,068.56
Step by Step Solution
- Step 1: Write the proportion equation
21,513,343.68 : 29,687,550.43 = 11,723,579.21 : x - Step 2: Convert to fraction form
21,513,343.68/29,687,550.43 = 11,723,579.21/x - Step 3: Cross multiply
21,513,343.68x = 29,687,550.43 × 11,723,579.21 - Step 4: Simplify right side
21,513,343.68x = 348,044,349,016,974.56 - Step 5: Solve for x
x = 348,044,349,016,974.56/21,513,343.68 - Step 6: Final answer
x = 16,178,068.56
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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.