Home / 20,928.60-31,385.52-6,133.68

Finding the Fourth Proportional to 20,928.60, 31,385.52 and 6,133.68

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Solution

The fourth proportional to 20,928.60, 31,385.52 and 6,133.68 is: 9,198.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.60 : 31,385.52 = 6,133.68 : x
  2. Step 2: Convert to fraction form
    20,928.60/31,385.52 = 6,133.68/x
  3. Step 3: Cross multiply
    20,928.60x = 31,385.52 × 6,133.68
  4. Step 4: Simplify right side
    20,928.60x = 192,508,736.31
  5. Step 5: Solve for x
    x = 192,508,736.31/20,928.60
  6. Step 6: Final answer
    x = 9,198.36

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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.