Home / 18,791.27-28,190.15-6,312.50

Finding the Fourth Proportional to 18,791.27, 28,190.15 and 6,312.50

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Solution

The fourth proportional to 18,791.27, 28,190.15 and 6,312.50 is: 9,469.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.27 : 28,190.15 = 6,312.50 : x
  2. Step 2: Convert to fraction form
    18,791.27/28,190.15 = 6,312.50/x
  3. Step 3: Cross multiply
    18,791.27x = 28,190.15 × 6,312.50
  4. Step 4: Simplify right side
    18,791.27x = 177,950,321.88
  5. Step 5: Solve for x
    x = 177,950,321.88/18,791.27
  6. Step 6: Final answer
    x = 9,469.84

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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.