Home / 21,287,862.47-31,815,162.53-15,542,708.85

Finding the Fourth Proportional to 21,287,862.47, 31,815,162.53 and 15,542,708.85

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Solution

The fourth proportional to 21,287,862.47, 31,815,162.53 and 15,542,708.85 is: 23,228,908.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287,862.47 : 31,815,162.53 = 15,542,708.85 : x
  2. Step 2: Convert to fraction form
    21,287,862.47/31,815,162.53 = 15,542,708.85/x
  3. Step 3: Cross multiply
    21,287,862.47x = 31,815,162.53 × 15,542,708.85
  4. Step 4: Simplify right side
    21,287,862.47x = 494,493,807,982,430.06
  5. Step 5: Solve for x
    x = 494,493,807,982,430.06/21,287,862.47
  6. Step 6: Final answer
    x = 23,228,908.44

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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.