Home / 18,120,835.20-25,006,755.80-9,972,073.20

Finding the Fourth Proportional to 18,120,835.20, 25,006,755.80 and 9,972,073.20

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Solution

The fourth proportional to 18,120,835.20, 25,006,755.80 and 9,972,073.20 is: 13,761,462.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120,835.20 : 25,006,755.80 = 9,972,073.20 : x
  2. Step 2: Convert to fraction form
    18,120,835.20/25,006,755.80 = 9,972,073.20/x
  3. Step 3: Cross multiply
    18,120,835.20x = 25,006,755.80 × 9,972,073.20
  4. Step 4: Simplify right side
    18,120,835.20x = 249,369,199,332,124.56
  5. Step 5: Solve for x
    x = 249,369,199,332,124.56/18,120,835.20
  6. Step 6: Final answer
    x = 13,761,462.79

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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.