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Finding the Fourth Proportional to 27,906.78, 41,866.32 and 9,186.06

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Solution

The fourth proportional to 27,906.78, 41,866.32 and 9,186.06 is: 13,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,906.78 : 41,866.32 = 9,186.06 : x
  2. Step 2: Convert to fraction form
    27,906.78/41,866.32 = 9,186.06/x
  3. Step 3: Cross multiply
    27,906.78x = 41,866.32 × 9,186.06
  4. Step 4: Simplify right side
    27,906.78x = 384,586,527.50
  5. Step 5: Solve for x
    x = 384,586,527.50/27,906.78
  6. Step 6: Final answer
    x = 13,781.11

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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.