Home / 13,831.20-20,738.42-5,512.48

Finding the Fourth Proportional to 13,831.20, 20,738.42 and 5,512.48

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Solution

The fourth proportional to 13,831.20, 20,738.42 and 5,512.48 is: 8,265.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.20 : 20,738.42 = 5,512.48 : x
  2. Step 2: Convert to fraction form
    13,831.20/20,738.42 = 5,512.48/x
  3. Step 3: Cross multiply
    13,831.20x = 20,738.42 × 5,512.48
  4. Step 4: Simplify right side
    13,831.20x = 114,320,125.48
  5. Step 5: Solve for x
    x = 114,320,125.48/13,831.20
  6. Step 6: Final answer
    x = 8,265.38

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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.