Home / 12,186.91-18,287.64-11,195.47

Finding the Fourth Proportional to 12,186.91, 18,287.64 and 11,195.47

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Solution

The fourth proportional to 12,186.91, 18,287.64 and 11,195.47 is: 16,799.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.91 : 18,287.64 = 11,195.47 : x
  2. Step 2: Convert to fraction form
    12,186.91/18,287.64 = 11,195.47/x
  3. Step 3: Cross multiply
    12,186.91x = 18,287.64 × 11,195.47
  4. Step 4: Simplify right side
    12,186.91x = 204,738,633.55
  5. Step 5: Solve for x
    x = 204,738,633.55/12,186.91
  6. Step 6: Final answer
    x = 16,799.89

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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.