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Finding the Fourth Proportional to 12,007.00, 18,013.17 and 3,687.86

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Solution

The fourth proportional to 12,007.00, 18,013.17 and 3,687.86 is: 5,532.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.00 : 18,013.17 = 3,687.86 : x
  2. Step 2: Convert to fraction form
    12,007.00/18,013.17 = 3,687.86/x
  3. Step 3: Cross multiply
    12,007.00x = 18,013.17 × 3,687.86
  4. Step 4: Simplify right side
    12,007.00x = 66,430,006.65
  5. Step 5: Solve for x
    x = 66,430,006.65/12,007.00
  6. Step 6: Final answer
    x = 5,532.61

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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.