Home / 13,719.55-20,579.29-3,331.30

Finding the Fourth Proportional to 13,719.55, 20,579.29 and 3,331.30

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Solution

The fourth proportional to 13,719.55, 20,579.29 and 3,331.30 is: 4,996.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.55 : 20,579.29 = 3,331.30 : x
  2. Step 2: Convert to fraction form
    13,719.55/20,579.29 = 3,331.30/x
  3. Step 3: Cross multiply
    13,719.55x = 20,579.29 × 3,331.30
  4. Step 4: Simplify right side
    13,719.55x = 68,555,834.84
  5. Step 5: Solve for x
    x = 68,555,834.84/13,719.55
  6. Step 6: Final answer
    x = 4,996.94

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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.