Home / 11,918.72-16,447.78-6,882.55

Finding the Fourth Proportional to 11,918.72, 16,447.78 and 6,882.55

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Solution

The fourth proportional to 11,918.72, 16,447.78 and 6,882.55 is: 9,497.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.72 : 16,447.78 = 6,882.55 : x
  2. Step 2: Convert to fraction form
    11,918.72/16,447.78 = 6,882.55/x
  3. Step 3: Cross multiply
    11,918.72x = 16,447.78 × 6,882.55
  4. Step 4: Simplify right side
    11,918.72x = 113,202,668.24
  5. Step 5: Solve for x
    x = 113,202,668.24/11,918.72
  6. Step 6: Final answer
    x = 9,497.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.