Home / 20,132.20-30,198.30-17,021.80

Finding the Fourth Proportional to 20,132.20, 30,198.30 and 17,021.80

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Solution

The fourth proportional to 20,132.20, 30,198.30 and 17,021.80 is: 25,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.20 : 30,198.30 = 17,021.80 : x
  2. Step 2: Convert to fraction form
    20,132.20/30,198.30 = 17,021.80/x
  3. Step 3: Cross multiply
    20,132.20x = 30,198.30 × 17,021.80
  4. Step 4: Simplify right side
    20,132.20x = 514,029,422.94
  5. Step 5: Solve for x
    x = 514,029,422.94/20,132.20
  6. Step 6: Final answer
    x = 25,532.70

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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.