Home / 23,179.20-34,781.40-12,648.60

Finding the Fourth Proportional to 23,179.20, 34,781.40 and 12,648.60

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Solution

The fourth proportional to 23,179.20, 34,781.40 and 12,648.60 is: 18,979.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,179.20 : 34,781.40 = 12,648.60 : x
  2. Step 2: Convert to fraction form
    23,179.20/34,781.40 = 12,648.60/x
  3. Step 3: Cross multiply
    23,179.20x = 34,781.40 × 12,648.60
  4. Step 4: Simplify right side
    23,179.20x = 439,936,016.04
  5. Step 5: Solve for x
    x = 439,936,016.04/23,179.20
  6. Step 6: Final answer
    x = 18,979.78

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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.