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Finding the Fourth Proportional to 11,128, 16,679.03 and 6,195.28

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Solution

The fourth proportional to 11,128, 16,679.03 and 6,195.28 is: 9,285.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128 : 16,679.03 = 6,195.28 : x
  2. Step 2: Convert to fraction form
    11,128/16,679.03 = 6,195.28/x
  3. Step 3: Cross multiply
    11,128x = 16,679.03 × 6,195.28
  4. Step 4: Simplify right side
    11,128x = 103,331,260.98
  5. Step 5: Solve for x
    x = 103,331,260.98/11,128
  6. Step 6: Final answer
    x = 9,285.70

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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.