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Finding the Fourth Proportional to 13,654.65, 20,481.99 and 3,793.92

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Solution

The fourth proportional to 13,654.65, 20,481.99 and 3,793.92 is: 5,690.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.65 : 20,481.99 = 3,793.92 : x
  2. Step 2: Convert to fraction form
    13,654.65/20,481.99 = 3,793.92/x
  3. Step 3: Cross multiply
    13,654.65x = 20,481.99 × 3,793.92
  4. Step 4: Simplify right side
    13,654.65x = 77,707,031.50
  5. Step 5: Solve for x
    x = 77,707,031.50/13,654.65
  6. Step 6: Final answer
    x = 5,690.88

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1.5x scale

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.