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Finding the Fourth Proportional to 22,279.84, 33,419.84 and 9,129.28

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Solution

The fourth proportional to 22,279.84, 33,419.84 and 9,129.28 is: 13,693.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,279.84 : 33,419.84 = 9,129.28 : x
  2. Step 2: Convert to fraction form
    22,279.84/33,419.84 = 9,129.28/x
  3. Step 3: Cross multiply
    22,279.84x = 33,419.84 × 9,129.28
  4. Step 4: Simplify right side
    22,279.84x = 305,099,076.92
  5. Step 5: Solve for x
    x = 305,099,076.92/22,279.84
  6. Step 6: Final answer
    x = 13,693.95

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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.