Home / 18,621.92-27,917.16-8,083.98

Finding the Fourth Proportional to 18,621.92, 27,917.16 and 8,083.98

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Solution

The fourth proportional to 18,621.92, 27,917.16 and 8,083.98 is: 12,119.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.92 : 27,917.16 = 8,083.98 : x
  2. Step 2: Convert to fraction form
    18,621.92/27,917.16 = 8,083.98/x
  3. Step 3: Cross multiply
    18,621.92x = 27,917.16 × 8,083.98
  4. Step 4: Simplify right side
    18,621.92x = 225,681,837.47
  5. Step 5: Solve for x
    x = 225,681,837.47/18,621.92
  6. Step 6: Final answer
    x = 12,119.15

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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.