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Finding the Fourth Proportional to 20,190.97, 30,287.67 and 6,339.97

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Solution

The fourth proportional to 20,190.97, 30,287.67 and 6,339.97 is: 9,510.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.97 : 30,287.67 = 6,339.97 : x
  2. Step 2: Convert to fraction form
    20,190.97/30,287.67 = 6,339.97/x
  3. Step 3: Cross multiply
    20,190.97x = 30,287.67 × 6,339.97
  4. Step 4: Simplify right side
    20,190.97x = 192,022,919.17
  5. Step 5: Solve for x
    x = 192,022,919.17/20,190.97
  6. Step 6: Final answer
    x = 9,510.34

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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.