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Finding the Fourth Proportional to 22,481.80, 33,722.70 and 18,982.60

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Solution

The fourth proportional to 22,481.80, 33,722.70 and 18,982.60 is: 28,473.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,481.80 : 33,722.70 = 18,982.60 : x
  2. Step 2: Convert to fraction form
    22,481.80/33,722.70 = 18,982.60/x
  3. Step 3: Cross multiply
    22,481.80x = 33,722.70 × 18,982.60
  4. Step 4: Simplify right side
    22,481.80x = 640,144,525.02
  5. Step 5: Solve for x
    x = 640,144,525.02/22,481.80
  6. Step 6: Final answer
    x = 28,473.90

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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.