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Finding the Fourth Proportional to 22,729.20, 33,911.22 and 20,234.40

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Solution

The fourth proportional to 22,729.20, 33,911.22 and 20,234.40 is: 30,189.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,729.20 : 33,911.22 = 20,234.40 : x
  2. Step 2: Convert to fraction form
    22,729.20/33,911.22 = 20,234.40/x
  3. Step 3: Cross multiply
    22,729.20x = 33,911.22 × 20,234.40
  4. Step 4: Simplify right side
    22,729.20x = 686,173,189.97
  5. Step 5: Solve for x
    x = 686,173,189.97/22,729.20
  6. Step 6: Final answer
    x = 30,189.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.