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Finding the Fourth Proportional to 12,696.67, 19,046.78 and 5,299.43

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Solution

The fourth proportional to 12,696.67, 19,046.78 and 5,299.43 is: 7,949.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696.67 : 19,046.78 = 5,299.43 : x
  2. Step 2: Convert to fraction form
    12,696.67/19,046.78 = 5,299.43/x
  3. Step 3: Cross multiply
    12,696.67x = 19,046.78 × 5,299.43
  4. Step 4: Simplify right side
    12,696.67x = 100,937,098.46
  5. Step 5: Solve for x
    x = 100,937,098.46/12,696.67
  6. Step 6: Final answer
    x = 7,949.89

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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.