Home / 13,121.82-19,677.03-3,759.77

Finding the Fourth Proportional to 13,121.82, 19,677.03 and 3,759.77

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Solution

The fourth proportional to 13,121.82, 19,677.03 and 3,759.77 is: 5,638.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.82 : 19,677.03 = 3,759.77 : x
  2. Step 2: Convert to fraction form
    13,121.82/19,677.03 = 3,759.77/x
  3. Step 3: Cross multiply
    13,121.82x = 19,677.03 × 3,759.77
  4. Step 4: Simplify right side
    13,121.82x = 73,981,142.18
  5. Step 5: Solve for x
    x = 73,981,142.18/13,121.82
  6. Step 6: Final answer
    x = 5,638.02

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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.