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Finding the Fourth Proportional to 27,951.30, 41,940.40 and 13,912.55

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Solution

The fourth proportional to 27,951.30, 41,940.40 and 13,912.55 is: 20,875.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,951.30 : 41,940.40 = 13,912.55 : x
  2. Step 2: Convert to fraction form
    27,951.30/41,940.40 = 13,912.55/x
  3. Step 3: Cross multiply
    27,951.30x = 41,940.40 × 13,912.55
  4. Step 4: Simplify right side
    27,951.30x = 583,497,910.16
  5. Step 5: Solve for x
    x = 583,497,910.16/27,951.30
  6. Step 6: Final answer
    x = 20,875.52

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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.