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Finding the Fourth Proportional to 38,481.40, 57,733.26 and 18,771.40

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Solution

The fourth proportional to 38,481.40, 57,733.26 and 18,771.40 is: 28,162.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,481.40 : 57,733.26 = 18,771.40 : x
  2. Step 2: Convert to fraction form
    38,481.40/57,733.26 = 18,771.40/x
  3. Step 3: Cross multiply
    38,481.40x = 57,733.26 × 18,771.40
  4. Step 4: Simplify right side
    38,481.40x = 1,083,734,116.76
  5. Step 5: Solve for x
    x = 1,083,734,116.76/38,481.40
  6. Step 6: Final answer
    x = 28,162.54

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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.