Finding the Fourth Proportional to 20,274,923.84, 27,979,163.20 and 10,982,318.72
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Solution
The fourth proportional to 20,274,923.84, 27,979,163.20 and 10,982,318.72 is: 15,155,474.33
Step by Step Solution
- Step 1: Write the proportion equation
20,274,923.84 : 27,979,163.20 = 10,982,318.72 : x - Step 2: Convert to fraction form
20,274,923.84/27,979,163.20 = 10,982,318.72/x - Step 3: Cross multiply
20,274,923.84x = 27,979,163.20 × 10,982,318.72 - Step 4: Simplify right side
20,274,923.84x = 307,276,087,781,295.12 - Step 5: Solve for x
x = 307,276,087,781,295.12/20,274,923.84 - Step 6: Final answer
x = 15,155,474.33
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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.