Finding the Fourth Proportional to 20,914,580.43, 28,862,988.71 and 11,622,115.80
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Solution
The fourth proportional to 20,914,580.43, 28,862,988.71 and 11,622,115.80 is: 16,039,001.99
Step by Step Solution
- Step 1: Write the proportion equation
20,914,580.43 : 28,862,988.71 = 11,622,115.80 : x - Step 2: Convert to fraction form
20,914,580.43/28,862,988.71 = 11,622,115.80/x - Step 3: Cross multiply
20,914,580.43x = 28,862,988.71 × 11,622,115.80 - Step 4: Simplify right side
20,914,580.43x = 335,448,997,063,602.06 - Step 5: Solve for x
x = 335,448,997,063,602.06/20,914,580.43 - Step 6: Final answer
x = 16,039,001.99
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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.