Finding the Fourth Proportional to 10,279,936.80, 15,419,905.20 and 9,807,544.80
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Solution
The fourth proportional to 10,279,936.80, 15,419,905.20 and 9,807,544.80 is: 14,711,317.20
Step by Step Solution
- Step 1: Write the proportion equation
10,279,936.80 : 15,419,905.20 = 9,807,544.80 : x - Step 2: Convert to fraction form
10,279,936.80/15,419,905.20 = 9,807,544.80/x - Step 3: Cross multiply
10,279,936.80x = 15,419,905.20 × 9,807,544.80 - Step 4: Simplify right side
10,279,936.80x = 151,231,411,060,752.97 - Step 5: Solve for x
x = 151,231,411,060,752.97/10,279,936.80 - Step 6: Final answer
x = 14,711,317.20
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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.