Home / 13,174.16-19,759.80-3,938

Finding the Fourth Proportional to 13,174.16, 19,759.80 and 3,938

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Solution

The fourth proportional to 13,174.16, 19,759.80 and 3,938 is: 5,906.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,174.16 : 19,759.80 = 3,938 : x
  2. Step 2: Convert to fraction form
    13,174.16/19,759.80 = 3,938/x
  3. Step 3: Cross multiply
    13,174.16x = 19,759.80 × 3,938
  4. Step 4: Simplify right side
    13,174.16x = 77,814,092.40
  5. Step 5: Solve for x
    x = 77,814,092.40/13,174.16
  6. Step 6: Final answer
    x = 5,906.57

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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.