Home / 31,813.91-47,648.19-15,185.64

Finding the Fourth Proportional to 31,813.91, 47,648.19 and 15,185.64

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Solution

The fourth proportional to 31,813.91, 47,648.19 and 15,185.64 is: 22,743.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,813.91 : 47,648.19 = 15,185.64 : x
  2. Step 2: Convert to fraction form
    31,813.91/47,648.19 = 15,185.64/x
  3. Step 3: Cross multiply
    31,813.91x = 47,648.19 × 15,185.64
  4. Step 4: Simplify right side
    31,813.91x = 723,568,438.67
  5. Step 5: Solve for x
    x = 723,568,438.67/31,813.91
  6. Step 6: Final answer
    x = 22,743.78

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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.