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Finding the Fourth Proportional to 18,638.52, 27,958.01 and 7,396.62

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Solution

The fourth proportional to 18,638.52, 27,958.01 and 7,396.62 is: 11,095.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.52 : 27,958.01 = 7,396.62 : x
  2. Step 2: Convert to fraction form
    18,638.52/27,958.01 = 7,396.62/x
  3. Step 3: Cross multiply
    18,638.52x = 27,958.01 × 7,396.62
  4. Step 4: Simplify right side
    18,638.52x = 206,794,738.94
  5. Step 5: Solve for x
    x = 206,794,738.94/18,638.52
  6. Step 6: Final answer
    x = 11,095.02

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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.