Home / 13,121.26-19,676.18-3,759.21

Finding the Fourth Proportional to 13,121.26, 19,676.18 and 3,759.21

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Solution

The fourth proportional to 13,121.26, 19,676.18 and 3,759.21 is: 5,637.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.26 : 19,676.18 = 3,759.21 : x
  2. Step 2: Convert to fraction form
    13,121.26/19,676.18 = 3,759.21/x
  3. Step 3: Cross multiply
    13,121.26x = 19,676.18 × 3,759.21
  4. Step 4: Simplify right side
    13,121.26x = 73,966,902.02
  5. Step 5: Solve for x
    x = 73,966,902.02/13,121.26
  6. Step 6: Final answer
    x = 5,637.18

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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.