Home / 12,481.85-18,717.63-5,081.30

Finding the Fourth Proportional to 12,481.85, 18,717.63 and 5,081.30

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Solution

The fourth proportional to 12,481.85, 18,717.63 and 5,081.30 is: 7,619.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.85 : 18,717.63 = 5,081.30 : x
  2. Step 2: Convert to fraction form
    12,481.85/18,717.63 = 5,081.30/x
  3. Step 3: Cross multiply
    12,481.85x = 18,717.63 × 5,081.30
  4. Step 4: Simplify right side
    12,481.85x = 95,109,893.32
  5. Step 5: Solve for x
    x = 95,109,893.32/12,481.85
  6. Step 6: Final answer
    x = 7,619.86

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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.