Home / 20,831.54-31,249.31-5,838.66

Finding the Fourth Proportional to 20,831.54, 31,249.31 and 5,838.66

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Solution

The fourth proportional to 20,831.54, 31,249.31 and 5,838.66 is: 8,758.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.54 : 31,249.31 = 5,838.66 : x
  2. Step 2: Convert to fraction form
    20,831.54/31,249.31 = 5,838.66/x
  3. Step 3: Cross multiply
    20,831.54x = 31,249.31 × 5,838.66
  4. Step 4: Simplify right side
    20,831.54x = 182,454,067.13
  5. Step 5: Solve for x
    x = 182,454,067.13/20,831.54
  6. Step 6: Final answer
    x = 8,758.55

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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.