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Finding the Fourth Proportional to 13,654.58, 20,479.50 and 3,793.91

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Solution

The fourth proportional to 13,654.58, 20,479.50 and 3,793.91 is: 5,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.58 : 20,479.50 = 3,793.91 : x
  2. Step 2: Convert to fraction form
    13,654.58/20,479.50 = 3,793.91/x
  3. Step 3: Cross multiply
    13,654.58x = 20,479.50 × 3,793.91
  4. Step 4: Simplify right side
    13,654.58x = 77,697,277.45
  5. Step 5: Solve for x
    x = 77,697,277.45/13,654.58
  6. Step 6: Final answer
    x = 5,690.20

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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.