Home / 28,517.82-39,379.80-17,781.02

Finding the Fourth Proportional to 28,517.82, 39,379.80 and 17,781.02

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Solution

The fourth proportional to 28,517.82, 39,379.80 and 17,781.02 is: 24,553.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.82 : 39,379.80 = 17,781.02 : x
  2. Step 2: Convert to fraction form
    28,517.82/39,379.80 = 17,781.02/x
  3. Step 3: Cross multiply
    28,517.82x = 39,379.80 × 17,781.02
  4. Step 4: Simplify right side
    28,517.82x = 700,213,011.40
  5. Step 5: Solve for x
    x = 700,213,011.40/28,517.82
  6. Step 6: Final answer
    x = 24,553.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.