Home / 11,781.36-17,668.28-3,882.40

Finding the Fourth Proportional to 11,781.36, 17,668.28 and 3,882.40

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Solution

The fourth proportional to 11,781.36, 17,668.28 and 3,882.40 is: 5,822.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,781.36 : 17,668.28 = 3,882.40 : x
  2. Step 2: Convert to fraction form
    11,781.36/17,668.28 = 3,882.40/x
  3. Step 3: Cross multiply
    11,781.36x = 17,668.28 × 3,882.40
  4. Step 4: Simplify right side
    11,781.36x = 68,595,241.93
  5. Step 5: Solve for x
    x = 68,595,241.93/11,781.36
  6. Step 6: Final answer
    x = 5,822.36

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1.5x scale

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.