Home / 20,838.92-31,305.42-12,095.24

Finding the Fourth Proportional to 20,838.92, 31,305.42 and 12,095.24

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Solution

The fourth proportional to 20,838.92, 31,305.42 and 12,095.24 is: 18,170.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.92 : 31,305.42 = 12,095.24 : x
  2. Step 2: Convert to fraction form
    20,838.92/31,305.42 = 12,095.24/x
  3. Step 3: Cross multiply
    20,838.92x = 31,305.42 × 12,095.24
  4. Step 4: Simplify right side
    20,838.92x = 378,646,568.20
  5. Step 5: Solve for x
    x = 378,646,568.20/20,838.92
  6. Step 6: Final answer
    x = 18,170.16

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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.