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Finding the Fourth Proportional to 22,121.70, 33,138.09 and 10,994.70

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Solution

The fourth proportional to 22,121.70, 33,138.09 and 10,994.70 is: 16,469.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,121.70 : 33,138.09 = 10,994.70 : x
  2. Step 2: Convert to fraction form
    22,121.70/33,138.09 = 10,994.70/x
  3. Step 3: Cross multiply
    22,121.70x = 33,138.09 × 10,994.70
  4. Step 4: Simplify right side
    22,121.70x = 364,343,358.12
  5. Step 5: Solve for x
    x = 364,343,358.12/22,121.70
  6. Step 6: Final answer
    x = 16,469.95

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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.