Home / 20,821,351.20-28,694,517.48-15,010,229.76

Finding the Fourth Proportional to 20,821,351.20, 28,694,517.48 and 15,010,229.76

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Solution

The fourth proportional to 20,821,351.20, 28,694,517.48 and 15,010,229.76 is: 20,686,039.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,821,351.20 : 28,694,517.48 = 15,010,229.76 : x
  2. Step 2: Convert to fraction form
    20,821,351.20/28,694,517.48 = 15,010,229.76/x
  3. Step 3: Cross multiply
    20,821,351.20x = 28,694,517.48 × 15,010,229.76
  4. Step 4: Simplify right side
    20,821,351.20x = 430,711,300,227,136.19
  5. Step 5: Solve for x
    x = 430,711,300,227,136.19/20,821,351.20
  6. Step 6: Final answer
    x = 20,686,039.83

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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.