Home / 13,580.82-20,371.84-3,721.10

Finding the Fourth Proportional to 13,580.82, 20,371.84 and 3,721.10

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Solution

The fourth proportional to 13,580.82, 20,371.84 and 3,721.10 is: 5,581.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.82 : 20,371.84 = 3,721.10 : x
  2. Step 2: Convert to fraction form
    13,580.82/20,371.84 = 3,721.10/x
  3. Step 3: Cross multiply
    13,580.82x = 20,371.84 × 3,721.10
  4. Step 4: Simplify right side
    13,580.82x = 75,805,542.66
  5. Step 5: Solve for x
    x = 75,805,542.66/13,580.82
  6. Step 6: Final answer
    x = 5,581.81

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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.