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Finding the Fourth Proportional to 17,753.92, 26,640.60 and 11,915.44

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Solution

The fourth proportional to 17,753.92, 26,640.60 and 11,915.44 is: 17,879.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,753.92 : 26,640.60 = 11,915.44 : x
  2. Step 2: Convert to fraction form
    17,753.92/26,640.60 = 11,915.44/x
  3. Step 3: Cross multiply
    17,753.92x = 26,640.60 × 11,915.44
  4. Step 4: Simplify right side
    17,753.92x = 317,434,470.86
  5. Step 5: Solve for x
    x = 317,434,470.86/17,753.92
  6. Step 6: Final answer
    x = 17,879.68

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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.