Home / 20,515,331.20-30,748,113.60-9,143,708.80

Finding the Fourth Proportional to 20,515,331.20, 30,748,113.60 and 9,143,708.80

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Solution

The fourth proportional to 20,515,331.20, 30,748,113.60 and 9,143,708.80 is: 13,704,472.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515,331.20 : 30,748,113.60 = 9,143,708.80 : x
  2. Step 2: Convert to fraction form
    20,515,331.20/30,748,113.60 = 9,143,708.80/x
  3. Step 3: Cross multiply
    20,515,331.20x = 30,748,113.60 × 9,143,708.80
  4. Step 4: Simplify right side
    20,515,331.20x = 281,151,796,907,719.72
  5. Step 5: Solve for x
    x = 281,151,796,907,719.72/20,515,331.20
  6. Step 6: Final answer
    x = 13,704,472.73

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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.