Home / 11,988.12-17,982.18-3,668.21

Finding the Fourth Proportional to 11,988.12, 17,982.18 and 3,668.21

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Solution

The fourth proportional to 11,988.12, 17,982.18 and 3,668.21 is: 5,502.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.12 : 17,982.18 = 3,668.21 : x
  2. Step 2: Convert to fraction form
    11,988.12/17,982.18 = 3,668.21/x
  3. Step 3: Cross multiply
    11,988.12x = 17,982.18 × 3,668.21
  4. Step 4: Simplify right side
    11,988.12x = 65,962,412.50
  5. Step 5: Solve for x
    x = 65,962,412.50/11,988.12
  6. Step 6: Final answer
    x = 5,502.32

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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.