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Finding the Fourth Proportional to 22,191.80, 33,239.10 and 19,729.40

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Solution

The fourth proportional to 22,191.80, 33,239.10 and 19,729.40 is: 29,550.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,191.80 : 33,239.10 = 19,729.40 : x
  2. Step 2: Convert to fraction form
    22,191.80/33,239.10 = 19,729.40/x
  3. Step 3: Cross multiply
    22,191.80x = 33,239.10 × 19,729.40
  4. Step 4: Simplify right side
    22,191.80x = 655,787,499.54
  5. Step 5: Solve for x
    x = 655,787,499.54/22,191.80
  6. Step 6: Final answer
    x = 29,550.89

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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.