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Finding the Fourth Proportional to 18,008, 27,012.12 and 5,696

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Solution

The fourth proportional to 18,008, 27,012.12 and 5,696 is: 8,544.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,008 : 27,012.12 = 5,696 : x
  2. Step 2: Convert to fraction form
    18,008/27,012.12 = 5,696/x
  3. Step 3: Cross multiply
    18,008x = 27,012.12 × 5,696
  4. Step 4: Simplify right side
    18,008x = 153,861,035.52
  5. Step 5: Solve for x
    x = 153,861,035.52/18,008
  6. Step 6: Final answer
    x = 8,544.04

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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.