Home / 20,831.83-31,247.94-5,249.45

Finding the Fourth Proportional to 20,831.83, 31,247.94 and 5,249.45

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Solution

The fourth proportional to 20,831.83, 31,247.94 and 5,249.45 is: 7,874.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.83 : 31,247.94 = 5,249.45 : x
  2. Step 2: Convert to fraction form
    20,831.83/31,247.94 = 5,249.45/x
  3. Step 3: Cross multiply
    20,831.83x = 31,247.94 × 5,249.45
  4. Step 4: Simplify right side
    20,831.83x = 164,034,596.44
  5. Step 5: Solve for x
    x = 164,034,596.44/20,831.83
  6. Step 6: Final answer
    x = 7,874.23

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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.