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Finding the Fourth Proportional to 26,631, 39,945.42 and 7,910.28

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Solution

The fourth proportional to 26,631, 39,945.42 and 7,910.28 is: 11,865.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,631 : 39,945.42 = 7,910.28 : x
  2. Step 2: Convert to fraction form
    26,631/39,945.42 = 7,910.28/x
  3. Step 3: Cross multiply
    26,631x = 39,945.42 × 7,910.28
  4. Step 4: Simplify right side
    26,631x = 315,979,456.92
  5. Step 5: Solve for x
    x = 315,979,456.92/26,631
  6. Step 6: Final answer
    x = 11,865.10

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1.5x scale

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.