Home / 18,755.20-28,132.83-7,659.95

Finding the Fourth Proportional to 18,755.20, 28,132.83 and 7,659.95

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Solution

The fourth proportional to 18,755.20, 28,132.83 and 7,659.95 is: 11,489.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755.20 : 28,132.83 = 7,659.95 : x
  2. Step 2: Convert to fraction form
    18,755.20/28,132.83 = 7,659.95/x
  3. Step 3: Cross multiply
    18,755.20x = 28,132.83 × 7,659.95
  4. Step 4: Simplify right side
    18,755.20x = 215,496,032.86
  5. Step 5: Solve for x
    x = 215,496,032.86/18,755.20
  6. Step 6: Final answer
    x = 11,489.94

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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.