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Finding the Fourth Proportional to 11,943.92, 17,900.49 and 4,915.49

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Solution

The fourth proportional to 11,943.92, 17,900.49 and 4,915.49 is: 7,366.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,943.92 : 17,900.49 = 4,915.49 : x
  2. Step 2: Convert to fraction form
    11,943.92/17,900.49 = 4,915.49/x
  3. Step 3: Cross multiply
    11,943.92x = 17,900.49 × 4,915.49
  4. Step 4: Simplify right side
    11,943.92x = 87,989,608.52
  5. Step 5: Solve for x
    x = 87,989,608.52/11,943.92
  6. Step 6: Final answer
    x = 7,366.89

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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.