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Finding the Fourth Proportional to 18,077, 27,115.50 and 5,765

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Solution

The fourth proportional to 18,077, 27,115.50 and 5,765 is: 8,647.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,077 : 27,115.50 = 5,765 : x
  2. Step 2: Convert to fraction form
    18,077/27,115.50 = 5,765/x
  3. Step 3: Cross multiply
    18,077x = 27,115.50 × 5,765
  4. Step 4: Simplify right side
    18,077x = 156,320,857.50
  5. Step 5: Solve for x
    x = 156,320,857.50/18,077
  6. Step 6: Final answer
    x = 8,647.50

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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.