Home / 20,386,102.07-28,132,824.72-11,218,744.82

Finding the Fourth Proportional to 20,386,102.07, 28,132,824.72 and 11,218,744.82

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Solution

The fourth proportional to 20,386,102.07, 28,132,824.72 and 11,218,744.82 is: 15,481,869.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,102.07 : 28,132,824.72 = 11,218,744.82 : x
  2. Step 2: Convert to fraction form
    20,386,102.07/28,132,824.72 = 11,218,744.82/x
  3. Step 3: Cross multiply
    20,386,102.07x = 28,132,824.72 × 11,218,744.82
  4. Step 4: Simplify right side
    20,386,102.07x = 315,614,981,711,870.31
  5. Step 5: Solve for x
    x = 315,614,981,711,870.31/20,386,102.07
  6. Step 6: Final answer
    x = 15,481,869.98

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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.