Home / 20,972,218.91-28,942,560.02-11,679,788.92

Finding the Fourth Proportional to 20,972,218.91, 28,942,560.02 and 11,679,788.92

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Solution

The fourth proportional to 20,972,218.91, 28,942,560.02 and 11,679,788.92 is: 16,118,608.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972,218.91 : 28,942,560.02 = 11,679,788.92 : x
  2. Step 2: Convert to fraction form
    20,972,218.91/28,942,560.02 = 11,679,788.92/x
  3. Step 3: Cross multiply
    20,972,218.91x = 28,942,560.02 × 11,679,788.92
  4. Step 4: Simplify right side
    20,972,218.91x = 338,042,991,838,031
  5. Step 5: Solve for x
    x = 338,042,991,838,031/20,972,218.91
  6. Step 6: Final answer
    x = 16,118,608.78

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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.