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Finding the Fourth Proportional to 22,201.94, 30,640.37 and 12,644.92

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Solution

The fourth proportional to 22,201.94, 30,640.37 and 12,644.92 is: 17,450.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,201.94 : 30,640.37 = 12,644.92 : x
  2. Step 2: Convert to fraction form
    22,201.94/30,640.37 = 12,644.92/x
  3. Step 3: Cross multiply
    22,201.94x = 30,640.37 × 12,644.92
  4. Step 4: Simplify right side
    22,201.94x = 387,445,027.42
  5. Step 5: Solve for x
    x = 387,445,027.42/22,201.94
  6. Step 6: Final answer
    x = 17,450.95

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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.