Home / 13,388.28-20,078.52-4,025.88

Finding the Fourth Proportional to 13,388.28, 20,078.52 and 4,025.88

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Solution

The fourth proportional to 13,388.28, 20,078.52 and 4,025.88 is: 6,037.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.28 : 20,078.52 = 4,025.88 : x
  2. Step 2: Convert to fraction form
    13,388.28/20,078.52 = 4,025.88/x
  3. Step 3: Cross multiply
    13,388.28x = 20,078.52 × 4,025.88
  4. Step 4: Simplify right side
    13,388.28x = 80,833,712.10
  5. Step 5: Solve for x
    x = 80,833,712.10/13,388.28
  6. Step 6: Final answer
    x = 6,037.65

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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.