Home / 13,581.42-20,372.87-5,260.70

Finding the Fourth Proportional to 13,581.42, 20,372.87 and 5,260.70

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Solution

The fourth proportional to 13,581.42, 20,372.87 and 5,260.70 is: 7,891.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.42 : 20,372.87 = 5,260.70 : x
  2. Step 2: Convert to fraction form
    13,581.42/20,372.87 = 5,260.70/x
  3. Step 3: Cross multiply
    13,581.42x = 20,372.87 × 5,260.70
  4. Step 4: Simplify right side
    13,581.42x = 107,175,477.10
  5. Step 5: Solve for x
    x = 107,175,477.10/13,581.42
  6. Step 6: Final answer
    x = 7,891.33

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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.