Home / 20,186.65-27,857.20-11,234.07

Finding the Fourth Proportional to 20,186.65, 27,857.20 and 11,234.07

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Solution

The fourth proportional to 20,186.65, 27,857.20 and 11,234.07 is: 15,502.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.65 : 27,857.20 = 11,234.07 : x
  2. Step 2: Convert to fraction form
    20,186.65/27,857.20 = 11,234.07/x
  3. Step 3: Cross multiply
    20,186.65x = 27,857.20 × 11,234.07
  4. Step 4: Simplify right side
    20,186.65x = 312,949,734.80
  5. Step 5: Solve for x
    x = 312,949,734.80/20,186.65
  6. Step 6: Final answer
    x = 15,502.81

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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.