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Finding the Fourth Proportional to 22,479.60, 33,724.83 and 8,439.78

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Solution

The fourth proportional to 22,479.60, 33,724.83 and 8,439.78 is: 12,661.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,479.60 : 33,724.83 = 8,439.78 : x
  2. Step 2: Convert to fraction form
    22,479.60/33,724.83 = 8,439.78/x
  3. Step 3: Cross multiply
    22,479.60x = 33,724.83 × 8,439.78
  4. Step 4: Simplify right side
    22,479.60x = 284,630,145.74
  5. Step 5: Solve for x
    x = 284,630,145.74/22,479.60
  6. Step 6: Final answer
    x = 12,661.71

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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.