Home / 20,807,209.40-31,203,072.30-7,156,524.20

Finding the Fourth Proportional to 20,807,209.40, 31,203,072.30 and 7,156,524.20

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Solution

The fourth proportional to 20,807,209.40, 31,203,072.30 and 7,156,524.20 is: 10,732,123.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807,209.40 : 31,203,072.30 = 7,156,524.20 : x
  2. Step 2: Convert to fraction form
    20,807,209.40/31,203,072.30 = 7,156,524.20/x
  3. Step 3: Cross multiply
    20,807,209.40x = 31,203,072.30 × 7,156,524.20
  4. Step 4: Simplify right side
    20,807,209.40x = 223,305,542,029,299.66
  5. Step 5: Solve for x
    x = 223,305,542,029,299.66/20,807,209.40
  6. Step 6: Final answer
    x = 10,732,123.55

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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.