Finding the Fourth Proportional to 20,851,324.12, 28,757,767.26 and 14,676,810.76
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Solution
The fourth proportional to 20,851,324.12, 28,757,767.26 and 14,676,810.76 is: 20,241,990.65
Step by Step Solution
- Step 1: Write the proportion equation
20,851,324.12 : 28,757,767.26 = 14,676,810.76 : x - Step 2: Convert to fraction form
20,851,324.12/28,757,767.26 = 14,676,810.76/x - Step 3: Cross multiply
20,851,324.12x = 28,757,767.26 × 14,676,810.76 - Step 4: Simplify right side
20,851,324.12x = 422,072,307,955,143.75 - Step 5: Solve for x
x = 422,072,307,955,143.75/20,851,324.12 - Step 6: Final answer
x = 20,241,990.65
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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.