Home / 26,781.20-40,178.20-13,635.60

Finding the Fourth Proportional to 26,781.20, 40,178.20 and 13,635.60

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Solution

The fourth proportional to 26,781.20, 40,178.20 and 13,635.60 is: 20,456.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,781.20 : 40,178.20 = 13,635.60 : x
  2. Step 2: Convert to fraction form
    26,781.20/40,178.20 = 13,635.60/x
  3. Step 3: Cross multiply
    26,781.20x = 40,178.20 × 13,635.60
  4. Step 4: Simplify right side
    26,781.20x = 547,853,863.92
  5. Step 5: Solve for x
    x = 547,853,863.92/26,781.20
  6. Step 6: Final answer
    x = 20,456.66

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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.