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Finding the Fourth Proportional to 22,138.20, 33,158.70 and 19,222.20

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Solution

The fourth proportional to 22,138.20, 33,158.70 and 19,222.20 is: 28,791.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,138.20 : 33,158.70 = 19,222.20 : x
  2. Step 2: Convert to fraction form
    22,138.20/33,158.70 = 19,222.20/x
  3. Step 3: Cross multiply
    22,138.20x = 33,158.70 × 19,222.20
  4. Step 4: Simplify right side
    22,138.20x = 637,383,163.14
  5. Step 5: Solve for x
    x = 637,383,163.14/22,138.20
  6. Step 6: Final answer
    x = 28,791.10

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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.