Finding the Fourth Proportional to 10,916,891.80, 16,343,844.90 and 6,665,363.80
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Solution
The fourth proportional to 10,916,891.80, 16,343,844.90 and 6,665,363.80 is: 9,978,817.61
Step by Step Solution
- Step 1: Write the proportion equation
10,916,891.80 : 16,343,844.90 = 6,665,363.80 : x - Step 2: Convert to fraction form
10,916,891.80/16,343,844.90 = 6,665,363.80/x - Step 3: Cross multiply
10,916,891.80x = 16,343,844.90 × 6,665,363.80 - Step 4: Simplify right side
10,916,891.80x = 108,937,672,149,274.62 - Step 5: Solve for x
x = 108,937,672,149,274.62/10,916,891.80 - Step 6: Final answer
x = 9,978,817.61
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.