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Finding the Fourth Proportional to 20,091.52, 30,137 and 6,240.52

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Solution

The fourth proportional to 20,091.52, 30,137 and 6,240.52 is: 9,360.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.52 : 30,137 = 6,240.52 : x
  2. Step 2: Convert to fraction form
    20,091.52/30,137 = 6,240.52/x
  3. Step 3: Cross multiply
    20,091.52x = 30,137 × 6,240.52
  4. Step 4: Simplify right side
    20,091.52x = 188,070,551.24
  5. Step 5: Solve for x
    x = 188,070,551.24/20,091.52
  6. Step 6: Final answer
    x = 9,360.69

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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.