Home / 13,414.40-20,121.60-4,055.86

Finding the Fourth Proportional to 13,414.40, 20,121.60 and 4,055.86

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Solution

The fourth proportional to 13,414.40, 20,121.60 and 4,055.86 is: 6,083.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,414.40 : 20,121.60 = 4,055.86 : x
  2. Step 2: Convert to fraction form
    13,414.40/20,121.60 = 4,055.86/x
  3. Step 3: Cross multiply
    13,414.40x = 20,121.60 × 4,055.86
  4. Step 4: Simplify right side
    13,414.40x = 81,610,392.58
  5. Step 5: Solve for x
    x = 81,610,392.58/13,414.40
  6. Step 6: Final answer
    x = 6,083.79

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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.