Home / 19,982.62-29,991.21-7,679.26

Finding the Fourth Proportional to 19,982.62, 29,991.21 and 7,679.26

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Solution

The fourth proportional to 19,982.62, 29,991.21 and 7,679.26 is: 11,525.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.62 : 29,991.21 = 7,679.26 : x
  2. Step 2: Convert to fraction form
    19,982.62/29,991.21 = 7,679.26/x
  3. Step 3: Cross multiply
    19,982.62x = 29,991.21 × 7,679.26
  4. Step 4: Simplify right side
    19,982.62x = 230,310,299.30
  5. Step 5: Solve for x
    x = 230,310,299.30/19,982.62
  6. Step 6: Final answer
    x = 11,525.53

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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.