Home / 11,985.57-17,976.33-3,218.54

Finding the Fourth Proportional to 11,985.57, 17,976.33 and 3,218.54

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Solution

The fourth proportional to 11,985.57, 17,976.33 and 3,218.54 is: 4,827.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.57 : 17,976.33 = 3,218.54 : x
  2. Step 2: Convert to fraction form
    11,985.57/17,976.33 = 3,218.54/x
  3. Step 3: Cross multiply
    11,985.57x = 17,976.33 × 3,218.54
  4. Step 4: Simplify right side
    11,985.57x = 57,857,447.28
  5. Step 5: Solve for x
    x = 57,857,447.28/11,985.57
  6. Step 6: Final answer
    x = 4,827.26

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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.