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Finding the Fourth Proportional to 12,668.64, 18,974.42 and 6,099.76

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Solution

The fourth proportional to 12,668.64, 18,974.42 and 6,099.76 is: 9,135.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.64 : 18,974.42 = 6,099.76 : x
  2. Step 2: Convert to fraction form
    12,668.64/18,974.42 = 6,099.76/x
  3. Step 3: Cross multiply
    12,668.64x = 18,974.42 × 6,099.76
  4. Step 4: Simplify right side
    12,668.64x = 115,739,408.14
  5. Step 5: Solve for x
    x = 115,739,408.14/12,668.64
  6. Step 6: Final answer
    x = 9,135.90

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1.5x scale

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.