Home / 13,831.76-20,744.79-3,968.85

Finding the Fourth Proportional to 13,831.76, 20,744.79 and 3,968.85

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Solution

The fourth proportional to 13,831.76, 20,744.79 and 3,968.85 is: 5,952.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.76 : 20,744.79 = 3,968.85 : x
  2. Step 2: Convert to fraction form
    13,831.76/20,744.79 = 3,968.85/x
  3. Step 3: Cross multiply
    13,831.76x = 20,744.79 × 3,968.85
  4. Step 4: Simplify right side
    13,831.76x = 82,332,959.79
  5. Step 5: Solve for x
    x = 82,332,959.79/13,831.76
  6. Step 6: Final answer
    x = 5,952.46

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1.5x scale

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.