Home / 18,761.15-28,149.19-8,225.55

Finding the Fourth Proportional to 18,761.15, 28,149.19 and 8,225.55

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Solution

The fourth proportional to 18,761.15, 28,149.19 and 8,225.55 is: 12,341.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,761.15 : 28,149.19 = 8,225.55 : x
  2. Step 2: Convert to fraction form
    18,761.15/28,149.19 = 8,225.55/x
  3. Step 3: Cross multiply
    18,761.15x = 28,149.19 × 8,225.55
  4. Step 4: Simplify right side
    18,761.15x = 231,542,549.24
  5. Step 5: Solve for x
    x = 231,542,549.24/18,761.15
  6. Step 6: Final answer
    x = 12,341.60

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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.