Home / 13,831.97-20,743.70-3,968.60

Finding the Fourth Proportional to 13,831.97, 20,743.70 and 3,968.60

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Solution

The fourth proportional to 13,831.97, 20,743.70 and 3,968.60 is: 5,951.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.97 : 20,743.70 = 3,968.60 : x
  2. Step 2: Convert to fraction form
    13,831.97/20,743.70 = 3,968.60/x
  3. Step 3: Cross multiply
    13,831.97x = 20,743.70 × 3,968.60
  4. Step 4: Simplify right side
    13,831.97x = 82,323,324.26
  5. Step 5: Solve for x
    x = 82,323,324.26/13,831.97
  6. Step 6: Final answer
    x = 5,951.67

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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.