Home / 13,928.40-20,891.11-3,932.90

Finding the Fourth Proportional to 13,928.40, 20,891.11 and 3,932.90

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Solution

The fourth proportional to 13,928.40, 20,891.11 and 3,932.90 is: 5,898.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.40 : 20,891.11 = 3,932.90 : x
  2. Step 2: Convert to fraction form
    13,928.40/20,891.11 = 3,932.90/x
  3. Step 3: Cross multiply
    13,928.40x = 20,891.11 × 3,932.90
  4. Step 4: Simplify right side
    13,928.40x = 82,162,646.52
  5. Step 5: Solve for x
    x = 82,162,646.52/13,928.40
  6. Step 6: Final answer
    x = 5,898.93

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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.