Home / 13,831.25-20,747.82-3,969.77

Finding the Fourth Proportional to 13,831.25, 20,747.82 and 3,969.77

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Solution

The fourth proportional to 13,831.25, 20,747.82 and 3,969.77 is: 5,954.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.25 : 20,747.82 = 3,969.77 : x
  2. Step 2: Convert to fraction form
    13,831.25/20,747.82 = 3,969.77/x
  3. Step 3: Cross multiply
    13,831.25x = 20,747.82 × 3,969.77
  4. Step 4: Simplify right side
    13,831.25x = 82,364,073.40
  5. Step 5: Solve for x
    x = 82,364,073.40/13,831.25
  6. Step 6: Final answer
    x = 5,954.93

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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.