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Finding the Fourth Proportional to 18,105.62, 27,133.40 and 13,067.82

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Solution

The fourth proportional to 18,105.62, 27,133.40 and 13,067.82 is: 19,583.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.62 : 27,133.40 = 13,067.82 : x
  2. Step 2: Convert to fraction form
    18,105.62/27,133.40 = 13,067.82/x
  3. Step 3: Cross multiply
    18,105.62x = 27,133.40 × 13,067.82
  4. Step 4: Simplify right side
    18,105.62x = 354,574,321.85
  5. Step 5: Solve for x
    x = 354,574,321.85/18,105.62
  6. Step 6: Final answer
    x = 19,583.67

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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.