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Finding the Fourth Proportional to 20,170.67, 30,248.67 and 7,694.15

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Solution

The fourth proportional to 20,170.67, 30,248.67 and 7,694.15 is: 11,538.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.67 : 30,248.67 = 7,694.15 : x
  2. Step 2: Convert to fraction form
    20,170.67/30,248.67 = 7,694.15/x
  3. Step 3: Cross multiply
    20,170.67x = 30,248.67 × 7,694.15
  4. Step 4: Simplify right side
    20,170.67x = 232,737,804.28
  5. Step 5: Solve for x
    x = 232,737,804.28/20,170.67
  6. Step 6: Final answer
    x = 11,538.43

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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.