Home / 31,867.92-47,758.81-12,135.71

Finding the Fourth Proportional to 31,867.92, 47,758.81 and 12,135.71

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Solution

The fourth proportional to 31,867.92, 47,758.81 and 12,135.71 is: 18,187.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,867.92 : 47,758.81 = 12,135.71 : x
  2. Step 2: Convert to fraction form
    31,867.92/47,758.81 = 12,135.71/x
  3. Step 3: Cross multiply
    31,867.92x = 47,758.81 × 12,135.71
  4. Step 4: Simplify right side
    31,867.92x = 579,587,293.73
  5. Step 5: Solve for x
    x = 579,587,293.73/31,867.92
  6. Step 6: Final answer
    x = 18,187.17

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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.