Home / 13,821.13-20,735.29-3,961.18

Finding the Fourth Proportional to 13,821.13, 20,735.29 and 3,961.18

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Solution

The fourth proportional to 13,821.13, 20,735.29 and 3,961.18 is: 5,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.13 : 20,735.29 = 3,961.18 : x
  2. Step 2: Convert to fraction form
    13,821.13/20,735.29 = 3,961.18/x
  3. Step 3: Cross multiply
    13,821.13x = 20,735.29 × 3,961.18
  4. Step 4: Simplify right side
    13,821.13x = 82,136,216.04
  5. Step 5: Solve for x
    x = 82,136,216.04/13,821.13
  6. Step 6: Final answer
    x = 5,942.80

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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.