Home / 18,781.88-28,177.26-6,131.57

Finding the Fourth Proportional to 18,781.88, 28,177.26 and 6,131.57

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Solution

The fourth proportional to 18,781.88, 28,177.26 and 6,131.57 is: 9,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781.88 : 28,177.26 = 6,131.57 : x
  2. Step 2: Convert to fraction form
    18,781.88/28,177.26 = 6,131.57/x
  3. Step 3: Cross multiply
    18,781.88x = 28,177.26 × 6,131.57
  4. Step 4: Simplify right side
    18,781.88x = 172,770,842.10
  5. Step 5: Solve for x
    x = 172,770,842.10/18,781.88
  6. Step 6: Final answer
    x = 9,198.80

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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.