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Finding the Fourth Proportional to 22,662.78, 31,279.13 and 14,481.15

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Solution

The fourth proportional to 22,662.78, 31,279.13 and 14,481.15 is: 19,986.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,662.78 : 31,279.13 = 14,481.15 : x
  2. Step 2: Convert to fraction form
    22,662.78/31,279.13 = 14,481.15/x
  3. Step 3: Cross multiply
    22,662.78x = 31,279.13 × 14,481.15
  4. Step 4: Simplify right side
    22,662.78x = 452,957,773.40
  5. Step 5: Solve for x
    x = 452,957,773.40/22,662.78
  6. Step 6: Final answer
    x = 19,986.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.