Home / 40,480.05-60,724.13-12,399.78

Finding the Fourth Proportional to 40,480.05, 60,724.13 and 12,399.78

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Solution

The fourth proportional to 40,480.05, 60,724.13 and 12,399.78 is: 18,600.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,480.05 : 60,724.13 = 12,399.78 : x
  2. Step 2: Convert to fraction form
    40,480.05/60,724.13 = 12,399.78/x
  3. Step 3: Cross multiply
    40,480.05x = 60,724.13 × 12,399.78
  4. Step 4: Simplify right side
    40,480.05x = 752,965,973.50
  5. Step 5: Solve for x
    x = 752,965,973.50/40,480.05
  6. Step 6: Final answer
    x = 18,600.91

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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.