Home / 21,193.20-31,753.35-13,793.85

Finding the Fourth Proportional to 21,193.20, 31,753.35 and 13,793.85

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Solution

The fourth proportional to 21,193.20, 31,753.35 and 13,793.85 is: 20,667.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.20 : 31,753.35 = 13,793.85 : x
  2. Step 2: Convert to fraction form
    21,193.20/31,753.35 = 13,793.85/x
  3. Step 3: Cross multiply
    21,193.20x = 31,753.35 × 13,793.85
  4. Step 4: Simplify right side
    21,193.20x = 438,000,946.90
  5. Step 5: Solve for x
    x = 438,000,946.90/21,193.20
  6. Step 6: Final answer
    x = 20,667.05

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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.