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Finding the Fourth Proportional to 13,861.36, 20,802 and 5,536.60

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Solution

The fourth proportional to 13,861.36, 20,802 and 5,536.60 is: 8,308.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,861.36 : 20,802 = 5,536.60 : x
  2. Step 2: Convert to fraction form
    13,861.36/20,802 = 5,536.60/x
  3. Step 3: Cross multiply
    13,861.36x = 20,802 × 5,536.60
  4. Step 4: Simplify right side
    13,861.36x = 115,172,353.20
  5. Step 5: Solve for x
    x = 115,172,353.20/13,861.36
  6. Step 6: Final answer
    x = 8,308.88

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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.