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Finding the Fourth Proportional to 11,943.87, 17,915.78 and 5,375.58

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Solution

The fourth proportional to 11,943.87, 17,915.78 and 5,375.58 is: 8,063.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,943.87 : 17,915.78 = 5,375.58 : x
  2. Step 2: Convert to fraction form
    11,943.87/17,915.78 = 5,375.58/x
  3. Step 3: Cross multiply
    11,943.87x = 17,915.78 × 5,375.58
  4. Step 4: Simplify right side
    11,943.87x = 96,307,681.77
  5. Step 5: Solve for x
    x = 96,307,681.77/11,943.87
  6. Step 6: Final answer
    x = 8,063.36

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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.