Home / 40,478.62-60,724.94-12,398

Finding the Fourth Proportional to 40,478.62, 60,724.94 and 12,398

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Solution

The fourth proportional to 40,478.62, 60,724.94 and 12,398 is: 18,599.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,478.62 : 60,724.94 = 12,398 : x
  2. Step 2: Convert to fraction form
    40,478.62/60,724.94 = 12,398/x
  3. Step 3: Cross multiply
    40,478.62x = 60,724.94 × 12,398
  4. Step 4: Simplify right side
    40,478.62x = 752,867,806.12
  5. Step 5: Solve for x
    x = 752,867,806.12/40,478.62
  6. Step 6: Final answer
    x = 18,599.15

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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.