Home / 21,287,863.47-31,815,164.02-15,542,709.85

Finding the Fourth Proportional to 21,287,863.47, 31,815,164.02 and 15,542,709.85

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Solution

The fourth proportional to 21,287,863.47, 31,815,164.02 and 15,542,709.85 is: 23,228,909.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287,863.47 : 31,815,164.02 = 15,542,709.85 : x
  2. Step 2: Convert to fraction form
    21,287,863.47/31,815,164.02 = 15,542,709.85/x
  3. Step 3: Cross multiply
    21,287,863.47x = 31,815,164.02 × 15,542,709.85
  4. Step 4: Simplify right side
    21,287,863.47x = 494,493,863,193,019.56
  5. Step 5: Solve for x
    x = 494,493,863,193,019.56/21,287,863.47
  6. Step 6: Final answer
    x = 23,228,909.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.