Home / 11,986.68-17,980.73-3,667.28

Finding the Fourth Proportional to 11,986.68, 17,980.73 and 3,667.28

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Solution

The fourth proportional to 11,986.68, 17,980.73 and 3,667.28 is: 5,501.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.68 : 17,980.73 = 3,667.28 : x
  2. Step 2: Convert to fraction form
    11,986.68/17,980.73 = 3,667.28/x
  3. Step 3: Cross multiply
    11,986.68x = 17,980.73 × 3,667.28
  4. Step 4: Simplify right side
    11,986.68x = 65,940,290.78
  5. Step 5: Solve for x
    x = 65,940,290.78/11,986.68
  6. Step 6: Final answer
    x = 5,501.13

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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.