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Finding the Fourth Proportional to 20,250.88, 30,368 and 6,396.16

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Solution

The fourth proportional to 20,250.88, 30,368 and 6,396.16 is: 9,591.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.88 : 30,368 = 6,396.16 : x
  2. Step 2: Convert to fraction form
    20,250.88/30,368 = 6,396.16/x
  3. Step 3: Cross multiply
    20,250.88x = 30,368 × 6,396.16
  4. Step 4: Simplify right side
    20,250.88x = 194,238,586.88
  5. Step 5: Solve for x
    x = 194,238,586.88/20,250.88
  6. Step 6: Final answer
    x = 9,591.61

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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.