Home / 13,821.82-20,716.32-7,966.33

Finding the Fourth Proportional to 13,821.82, 20,716.32 and 7,966.33

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Solution

The fourth proportional to 13,821.82, 20,716.32 and 7,966.33 is: 11,940.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.82 : 20,716.32 = 7,966.33 : x
  2. Step 2: Convert to fraction form
    13,821.82/20,716.32 = 7,966.33/x
  3. Step 3: Cross multiply
    13,821.82x = 20,716.32 × 7,966.33
  4. Step 4: Simplify right side
    13,821.82x = 165,033,019.59
  5. Step 5: Solve for x
    x = 165,033,019.59/13,821.82
  6. Step 6: Final answer
    x = 11,940.04

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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.