Home / 40,257.20-60,385.79-12,555.20

Finding the Fourth Proportional to 40,257.20, 60,385.79 and 12,555.20

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Solution

The fourth proportional to 40,257.20, 60,385.79 and 12,555.20 is: 18,832.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,257.20 : 60,385.79 = 12,555.20 : x
  2. Step 2: Convert to fraction form
    40,257.20/60,385.79 = 12,555.20/x
  3. Step 3: Cross multiply
    40,257.20x = 60,385.79 × 12,555.20
  4. Step 4: Simplify right side
    40,257.20x = 758,155,305.90
  5. Step 5: Solve for x
    x = 758,155,305.90/40,257.20
  6. Step 6: Final answer
    x = 18,832.79

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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.