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Finding the Fourth Proportional to 27,866.43, 41,775.03 and 21,321.83

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Solution

The fourth proportional to 27,866.43, 41,775.03 and 21,321.83 is: 31,963.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,866.43 : 41,775.03 = 21,321.83 : x
  2. Step 2: Convert to fraction form
    27,866.43/41,775.03 = 21,321.83/x
  3. Step 3: Cross multiply
    27,866.43x = 41,775.03 × 21,321.83
  4. Step 4: Simplify right side
    27,866.43x = 890,720,076.07
  5. Step 5: Solve for x
    x = 890,720,076.07/27,866.43
  6. Step 6: Final answer
    x = 31,963.92

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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.