Home / 18,906.20-28,370.10-7,227.80

Finding the Fourth Proportional to 18,906.20, 28,370.10 and 7,227.80

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Solution

The fourth proportional to 18,906.20, 28,370.10 and 7,227.80 is: 10,845.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,906.20 : 28,370.10 = 7,227.80 : x
  2. Step 2: Convert to fraction form
    18,906.20/28,370.10 = 7,227.80/x
  3. Step 3: Cross multiply
    18,906.20x = 28,370.10 × 7,227.80
  4. Step 4: Simplify right side
    18,906.20x = 205,053,408.78
  5. Step 5: Solve for x
    x = 205,053,408.78/18,906.20
  6. Step 6: Final answer
    x = 10,845.83

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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.