Home / 40,267.20-60,400.78-12,565.20

Finding the Fourth Proportional to 40,267.20, 60,400.78 and 12,565.20

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Solution

The fourth proportional to 40,267.20, 60,400.78 and 12,565.20 is: 18,847.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,267.20 : 60,400.78 = 12,565.20 : x
  2. Step 2: Convert to fraction form
    40,267.20/60,400.78 = 12,565.20/x
  3. Step 3: Cross multiply
    40,267.20x = 60,400.78 × 12,565.20
  4. Step 4: Simplify right side
    40,267.20x = 758,947,880.86
  5. Step 5: Solve for x
    x = 758,947,880.86/40,267.20
  6. Step 6: Final answer
    x = 18,847.79

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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.