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Finding the Fourth Proportional to 22,013.80, 32,943.90 and 20,170.60

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Solution

The fourth proportional to 22,013.80, 32,943.90 and 20,170.60 is: 30,185.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,013.80 : 32,943.90 = 20,170.60 : x
  2. Step 2: Convert to fraction form
    22,013.80/32,943.90 = 20,170.60/x
  3. Step 3: Cross multiply
    22,013.80x = 32,943.90 × 20,170.60
  4. Step 4: Simplify right side
    22,013.80x = 664,498,229.34
  5. Step 5: Solve for x
    x = 664,498,229.34/22,013.80
  6. Step 6: Final answer
    x = 30,185.53

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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.