Home / 21,287,861.47-31,815,161.04-15,542,707.85

Finding the Fourth Proportional to 21,287,861.47, 31,815,161.04 and 15,542,707.85

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Solution

The fourth proportional to 21,287,861.47, 31,815,161.04 and 15,542,707.85 is: 23,228,906.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287,861.47 : 31,815,161.04 = 15,542,707.85 : x
  2. Step 2: Convert to fraction form
    21,287,861.47/31,815,161.04 = 15,542,707.85/x
  3. Step 3: Cross multiply
    21,287,861.47x = 31,815,161.04 × 15,542,707.85
  4. Step 4: Simplify right side
    21,287,861.47x = 494,493,753,008,632.81
  5. Step 5: Solve for x
    x = 494,493,753,008,632.81/21,287,861.47
  6. Step 6: Final answer
    x = 23,228,906.94

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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.