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Finding the Fourth Proportional to 20,272.41, 30,410.17 and 5,481.41

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Solution

The fourth proportional to 20,272.41, 30,410.17 and 5,481.41 is: 8,222.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.41 : 30,410.17 = 5,481.41 : x
  2. Step 2: Convert to fraction form
    20,272.41/30,410.17 = 5,481.41/x
  3. Step 3: Cross multiply
    20,272.41x = 30,410.17 × 5,481.41
  4. Step 4: Simplify right side
    20,272.41x = 166,690,444.19
  5. Step 5: Solve for x
    x = 166,690,444.19/20,272.41
  6. Step 6: Final answer
    x = 8,222.53

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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.