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Finding the Fourth Proportional to 13,902,471.20, 20,853,706.80 and 11,802,951.20

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Solution

The fourth proportional to 13,902,471.20, 20,853,706.80 and 11,802,951.20 is: 17,704,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902,471.20 : 20,853,706.80 = 11,802,951.20 : x
  2. Step 2: Convert to fraction form
    13,902,471.20/20,853,706.80 = 11,802,951.20/x
  3. Step 3: Cross multiply
    13,902,471.20x = 20,853,706.80 × 11,802,951.20
  4. Step 4: Simplify right side
    13,902,471.20x = 246,135,283,699,508.16
  5. Step 5: Solve for x
    x = 246,135,283,699,508.16/13,902,471.20
  6. Step 6: Final answer
    x = 17,704,426.80

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1.5x scale

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.