Home / 13,719.39-20,579.10-3,331.14

Finding the Fourth Proportional to 13,719.39, 20,579.10 and 3,331.14

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Solution

The fourth proportional to 13,719.39, 20,579.10 and 3,331.14 is: 4,996.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.39 : 20,579.10 = 3,331.14 : x
  2. Step 2: Convert to fraction form
    13,719.39/20,579.10 = 3,331.14/x
  3. Step 3: Cross multiply
    13,719.39x = 20,579.10 × 3,331.14
  4. Step 4: Simplify right side
    13,719.39x = 68,551,760.28
  5. Step 5: Solve for x
    x = 68,551,760.28/13,719.39
  6. Step 6: Final answer
    x = 4,996.71

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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.