Home / 20,186.91-27,858.74-11,234.79

Finding the Fourth Proportional to 20,186.91, 27,858.74 and 11,234.79

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Solution

The fourth proportional to 20,186.91, 27,858.74 and 11,234.79 is: 15,504.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.91 : 27,858.74 = 11,234.79 : x
  2. Step 2: Convert to fraction form
    20,186.91/27,858.74 = 11,234.79/x
  3. Step 3: Cross multiply
    20,186.91x = 27,858.74 × 11,234.79
  4. Step 4: Simplify right side
    20,186.91x = 312,987,037.39
  5. Step 5: Solve for x
    x = 312,987,037.39/20,186.91
  6. Step 6: Final answer
    x = 15,504.45

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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.