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Finding the Fourth Proportional to 22,019.80, 33,029.40 and 7,229.20

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Solution

The fourth proportional to 22,019.80, 33,029.40 and 7,229.20 is: 10,843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,019.80 : 33,029.40 = 7,229.20 : x
  2. Step 2: Convert to fraction form
    22,019.80/33,029.40 = 7,229.20/x
  3. Step 3: Cross multiply
    22,019.80x = 33,029.40 × 7,229.20
  4. Step 4: Simplify right side
    22,019.80x = 238,776,138.48
  5. Step 5: Solve for x
    x = 238,776,138.48/22,019.80
  6. Step 6: Final answer
    x = 10,843.70

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Similar ratio
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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.