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Finding the Fourth Proportional to 12,668.48, 18,978.11 and 6,099.27

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Solution

The fourth proportional to 12,668.48, 18,978.11 and 6,099.27 is: 9,137.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.48 : 18,978.11 = 6,099.27 : x
  2. Step 2: Convert to fraction form
    12,668.48/18,978.11 = 6,099.27/x
  3. Step 3: Cross multiply
    12,668.48x = 18,978.11 × 6,099.27
  4. Step 4: Simplify right side
    12,668.48x = 115,752,586.48
  5. Step 5: Solve for x
    x = 115,752,586.48/12,668.48
  6. Step 6: Final answer
    x = 9,137.06

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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.