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Finding the Fourth Proportional to 25,481.80, 38,223.78 and 7,951.96

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Solution

The fourth proportional to 25,481.80, 38,223.78 and 7,951.96 is: 11,928.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,481.80 : 38,223.78 = 7,951.96 : x
  2. Step 2: Convert to fraction form
    25,481.80/38,223.78 = 7,951.96/x
  3. Step 3: Cross multiply
    25,481.80x = 38,223.78 × 7,951.96
  4. Step 4: Simplify right side
    25,481.80x = 303,953,969.61
  5. Step 5: Solve for x
    x = 303,953,969.61/25,481.80
  6. Step 6: Final answer
    x = 11,928.28

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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.