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Finding the Fourth Proportional to 22,272.60, 33,408.90 and 21,179.10

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Solution

The fourth proportional to 22,272.60, 33,408.90 and 21,179.10 is: 31,768.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,272.60 : 33,408.90 = 21,179.10 : x
  2. Step 2: Convert to fraction form
    22,272.60/33,408.90 = 21,179.10/x
  3. Step 3: Cross multiply
    22,272.60x = 33,408.90 × 21,179.10
  4. Step 4: Simplify right side
    22,272.60x = 707,570,433.99
  5. Step 5: Solve for x
    x = 707,570,433.99/22,272.60
  6. Step 6: Final answer
    x = 31,768.65

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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.