Home / 11,991.40-17,982.54-3,668.88

Finding the Fourth Proportional to 11,991.40, 17,982.54 and 3,668.88

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Solution

The fourth proportional to 11,991.40, 17,982.54 and 3,668.88 is: 5,501.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.40 : 17,982.54 = 3,668.88 : x
  2. Step 2: Convert to fraction form
    11,991.40/17,982.54 = 3,668.88/x
  3. Step 3: Cross multiply
    11,991.40x = 17,982.54 × 3,668.88
  4. Step 4: Simplify right side
    11,991.40x = 65,975,781.36
  5. Step 5: Solve for x
    x = 65,975,781.36/11,991.40
  6. Step 6: Final answer
    x = 5,501.92

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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.