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Finding the Fourth Proportional to 18,563.67, 27,850.65 and 8,571.47

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Solution

The fourth proportional to 18,563.67, 27,850.65 and 8,571.47 is: 12,859.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,563.67 : 27,850.65 = 8,571.47 : x
  2. Step 2: Convert to fraction form
    18,563.67/27,850.65 = 8,571.47/x
  3. Step 3: Cross multiply
    18,563.67x = 27,850.65 × 8,571.47
  4. Step 4: Simplify right side
    18,563.67x = 238,721,010.96
  5. Step 5: Solve for x
    x = 238,721,010.96/18,563.67
  6. Step 6: Final answer
    x = 12,859.58

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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.