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Finding the Fourth Proportional to 13,659.89, 20,489.83 and 3,799.17

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Solution

The fourth proportional to 13,659.89, 20,489.83 and 3,799.17 is: 5,698.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,659.89 : 20,489.83 = 3,799.17 : x
  2. Step 2: Convert to fraction form
    13,659.89/20,489.83 = 3,799.17/x
  3. Step 3: Cross multiply
    13,659.89x = 20,489.83 × 3,799.17
  4. Step 4: Simplify right side
    13,659.89x = 77,844,337.94
  5. Step 5: Solve for x
    x = 77,844,337.94/13,659.89
  6. Step 6: Final answer
    x = 5,698.76

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Similar ratio
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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.