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Finding the Fourth Proportional to 22,671.88, 33,963.54 and 12,781.24

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Solution

The fourth proportional to 22,671.88, 33,963.54 and 12,781.24 is: 19,146.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,671.88 : 33,963.54 = 12,781.24 : x
  2. Step 2: Convert to fraction form
    22,671.88/33,963.54 = 12,781.24/x
  3. Step 3: Cross multiply
    22,671.88x = 33,963.54 × 12,781.24
  4. Step 4: Simplify right side
    22,671.88x = 434,096,155.99
  5. Step 5: Solve for x
    x = 434,096,155.99/22,671.88
  6. Step 6: Final answer
    x = 19,146.90

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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.