Home / 20,680,007.20-31,034,007.60-9,314,605.60

Finding the Fourth Proportional to 20,680,007.20, 31,034,007.60 and 9,314,605.60

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Solution

The fourth proportional to 20,680,007.20, 31,034,007.60 and 9,314,605.60 is: 13,978,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680,007.20 : 31,034,007.60 = 9,314,605.60 : x
  2. Step 2: Convert to fraction form
    20,680,007.20/31,034,007.60 = 9,314,605.60/x
  3. Step 3: Cross multiply
    20,680,007.20x = 31,034,007.60 × 9,314,605.60
  4. Step 4: Simplify right side
    20,680,007.20x = 289,069,540,981,402.56
  5. Step 5: Solve for x
    x = 289,069,540,981,402.56/20,680,007.20
  6. Step 6: Final answer
    x = 13,978,212.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.