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Finding the Fourth Proportional to 18,238.72, 27,351.60 and 5,755

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Solution

The fourth proportional to 18,238.72, 27,351.60 and 5,755 is: 8,630.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,238.72 : 27,351.60 = 5,755 : x
  2. Step 2: Convert to fraction form
    18,238.72/27,351.60 = 5,755/x
  3. Step 3: Cross multiply
    18,238.72x = 27,351.60 × 5,755
  4. Step 4: Simplify right side
    18,238.72x = 157,408,458
  5. Step 5: Solve for x
    x = 157,408,458/18,238.72
  6. Step 6: Final answer
    x = 8,630.46

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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.