Home / 11,988.18-17,982.99-3,668.78

Finding the Fourth Proportional to 11,988.18, 17,982.99 and 3,668.78

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Solution

The fourth proportional to 11,988.18, 17,982.99 and 3,668.78 is: 5,503.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.18 : 17,982.99 = 3,668.78 : x
  2. Step 2: Convert to fraction form
    11,988.18/17,982.99 = 3,668.78/x
  3. Step 3: Cross multiply
    11,988.18x = 17,982.99 × 3,668.78
  4. Step 4: Simplify right side
    11,988.18x = 65,975,679.01
  5. Step 5: Solve for x
    x = 65,975,679.01/11,988.18
  6. Step 6: Final answer
    x = 5,503.39

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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.