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Finding the Fourth Proportional to 27,858.92, 41,789.20 and 8,135.42

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Solution

The fourth proportional to 27,858.92, 41,789.20 and 8,135.42 is: 12,203.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,858.92 : 41,789.20 = 8,135.42 : x
  2. Step 2: Convert to fraction form
    27,858.92/41,789.20 = 8,135.42/x
  3. Step 3: Cross multiply
    27,858.92x = 41,789.20 × 8,135.42
  4. Step 4: Simplify right side
    27,858.92x = 339,972,693.46
  5. Step 5: Solve for x
    x = 339,972,693.46/27,858.92
  6. Step 6: Final answer
    x = 12,203.37

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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.