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Finding the Fourth Proportional to 11,240.88, 16,853 and 5,391.92

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Solution

The fourth proportional to 11,240.88, 16,853 and 5,391.92 is: 8,083.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,240.88 : 16,853 = 5,391.92 : x
  2. Step 2: Convert to fraction form
    11,240.88/16,853 = 5,391.92/x
  3. Step 3: Cross multiply
    11,240.88x = 16,853 × 5,391.92
  4. Step 4: Simplify right side
    11,240.88x = 90,870,027.76
  5. Step 5: Solve for x
    x = 90,870,027.76/11,240.88
  6. Step 6: Final answer
    x = 8,083.89

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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.