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Finding the Fourth Proportional to 22,279.80, 33,419.70 and 21,934.20

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Solution

The fourth proportional to 22,279.80, 33,419.70 and 21,934.20 is: 32,901.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,279.80 : 33,419.70 = 21,934.20 : x
  2. Step 2: Convert to fraction form
    22,279.80/33,419.70 = 21,934.20/x
  3. Step 3: Cross multiply
    22,279.80x = 33,419.70 × 21,934.20
  4. Step 4: Simplify right side
    22,279.80x = 733,034,383.74
  5. Step 5: Solve for x
    x = 733,034,383.74/22,279.80
  6. Step 6: Final answer
    x = 32,901.30

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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.