Home / 12,180.60-18,270.90-4,387.86

Finding the Fourth Proportional to 12,180.60, 18,270.90 and 4,387.86

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Solution

The fourth proportional to 12,180.60, 18,270.90 and 4,387.86 is: 6,581.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.60 : 18,270.90 = 4,387.86 : x
  2. Step 2: Convert to fraction form
    12,180.60/18,270.90 = 4,387.86/x
  3. Step 3: Cross multiply
    12,180.60x = 18,270.90 × 4,387.86
  4. Step 4: Simplify right side
    12,180.60x = 80,170,151.27
  5. Step 5: Solve for x
    x = 80,170,151.27/12,180.60
  6. Step 6: Final answer
    x = 6,581.79

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Similar ratio
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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.