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Finding the Fourth Proportional to 18,543.56, 27,819.89 and 5,396.04

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Solution

The fourth proportional to 18,543.56, 27,819.89 and 5,396.04 is: 8,095.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,543.56 : 27,819.89 = 5,396.04 : x
  2. Step 2: Convert to fraction form
    18,543.56/27,819.89 = 5,396.04/x
  3. Step 3: Cross multiply
    18,543.56x = 27,819.89 × 5,396.04
  4. Step 4: Simplify right side
    18,543.56x = 150,117,212.26
  5. Step 5: Solve for x
    x = 150,117,212.26/18,543.56
  6. Step 6: Final answer
    x = 8,095.38

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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.