Home / 18,839.40-28,263.60-5,691.90

Finding the Fourth Proportional to 18,839.40, 28,263.60 and 5,691.90

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Solution

The fourth proportional to 18,839.40, 28,263.60 and 5,691.90 is: 8,539.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,839.40 : 28,263.60 = 5,691.90 : x
  2. Step 2: Convert to fraction form
    18,839.40/28,263.60 = 5,691.90/x
  3. Step 3: Cross multiply
    18,839.40x = 28,263.60 × 5,691.90
  4. Step 4: Simplify right side
    18,839.40x = 160,873,584.84
  5. Step 5: Solve for x
    x = 160,873,584.84/18,839.40
  6. Step 6: Final answer
    x = 8,539.21

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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.