Home / 13,831.78-20,741.54-3,968.82

Finding the Fourth Proportional to 13,831.78, 20,741.54 and 3,968.82

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Solution

The fourth proportional to 13,831.78, 20,741.54 and 3,968.82 is: 5,951.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.78 : 20,741.54 = 3,968.82 : x
  2. Step 2: Convert to fraction form
    13,831.78/20,741.54 = 3,968.82/x
  3. Step 3: Cross multiply
    13,831.78x = 20,741.54 × 3,968.82
  4. Step 4: Simplify right side
    13,831.78x = 82,319,438.78
  5. Step 5: Solve for x
    x = 82,319,438.78/13,831.78
  6. Step 6: Final answer
    x = 5,951.47

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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.