Home / 18,765.24-28,155.60-8,229.80

Finding the Fourth Proportional to 18,765.24, 28,155.60 and 8,229.80

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Solution

The fourth proportional to 18,765.24, 28,155.60 and 8,229.80 is: 12,348.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.24 : 28,155.60 = 8,229.80 : x
  2. Step 2: Convert to fraction form
    18,765.24/28,155.60 = 8,229.80/x
  3. Step 3: Cross multiply
    18,765.24x = 28,155.60 × 8,229.80
  4. Step 4: Simplify right side
    18,765.24x = 231,714,956.88
  5. Step 5: Solve for x
    x = 231,714,956.88/18,765.24
  6. Step 6: Final answer
    x = 12,348.09

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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.