Home / 31,863.71-47,767.62-12,129.14

Finding the Fourth Proportional to 31,863.71, 47,767.62 and 12,129.14

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Solution

The fourth proportional to 31,863.71, 47,767.62 and 12,129.14 is: 18,183.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,863.71 : 47,767.62 = 12,129.14 : x
  2. Step 2: Convert to fraction form
    31,863.71/47,767.62 = 12,129.14/x
  3. Step 3: Cross multiply
    31,863.71x = 47,767.62 × 12,129.14
  4. Step 4: Simplify right side
    31,863.71x = 579,380,150.45
  5. Step 5: Solve for x
    x = 579,380,150.45/31,863.71
  6. Step 6: Final answer
    x = 18,183.07

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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.