Home / 13,321.26-19,983.11-3,961.20

Finding the Fourth Proportional to 13,321.26, 19,983.11 and 3,961.20

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Solution

The fourth proportional to 13,321.26, 19,983.11 and 3,961.20 is: 5,942.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.26 : 19,983.11 = 3,961.20 : x
  2. Step 2: Convert to fraction form
    13,321.26/19,983.11 = 3,961.20/x
  3. Step 3: Cross multiply
    13,321.26x = 19,983.11 × 3,961.20
  4. Step 4: Simplify right side
    13,321.26x = 79,157,150.46
  5. Step 5: Solve for x
    x = 79,157,150.46/13,321.26
  6. Step 6: Final answer
    x = 5,942.17

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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.