Home / 20,807,500.80-31,211,251.20-18,288,076.80

Finding the Fourth Proportional to 20,807,500.80, 31,211,251.20 and 18,288,076.80

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Solution

The fourth proportional to 20,807,500.80, 31,211,251.20 and 18,288,076.80 is: 27,432,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807,500.80 : 31,211,251.20 = 18,288,076.80 : x
  2. Step 2: Convert to fraction form
    20,807,500.80/31,211,251.20 = 18,288,076.80/x
  3. Step 3: Cross multiply
    20,807,500.80x = 31,211,251.20 × 18,288,076.80
  4. Step 4: Simplify right side
    20,807,500.80x = 570,793,758,969,692.12
  5. Step 5: Solve for x
    x = 570,793,758,969,692.12/20,807,500.80
  6. Step 6: Final answer
    x = 27,432,115.20

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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.