Home / 26,105.20-39,179.40-12,086.80

Finding the Fourth Proportional to 26,105.20, 39,179.40 and 12,086.80

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Solution

The fourth proportional to 26,105.20, 39,179.40 and 12,086.80 is: 18,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,105.20 : 39,179.40 = 12,086.80 : x
  2. Step 2: Convert to fraction form
    26,105.20/39,179.40 = 12,086.80/x
  3. Step 3: Cross multiply
    26,105.20x = 39,179.40 × 12,086.80
  4. Step 4: Simplify right side
    26,105.20x = 473,553,571.92
  5. Step 5: Solve for x
    x = 473,553,571.92/26,105.20
  6. Step 6: Final answer
    x = 18,140.20

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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.