Home / 20,793.61-28,692.52-11,839.87

Finding the Fourth Proportional to 20,793.61, 28,692.52 and 11,839.87

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Solution

The fourth proportional to 20,793.61, 28,692.52 and 11,839.87 is: 16,337.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.61 : 28,692.52 = 11,839.87 : x
  2. Step 2: Convert to fraction form
    20,793.61/28,692.52 = 11,839.87/x
  3. Step 3: Cross multiply
    20,793.61x = 28,692.52 × 11,839.87
  4. Step 4: Simplify right side
    20,793.61x = 339,715,706.77
  5. Step 5: Solve for x
    x = 339,715,706.77/20,793.61
  6. Step 6: Final answer
    x = 16,337.50

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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.