Home / 20,142.27-27,795.69-11,189.61

Finding the Fourth Proportional to 20,142.27, 27,795.69 and 11,189.61

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Solution

The fourth proportional to 20,142.27, 27,795.69 and 11,189.61 is: 15,441.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.27 : 27,795.69 = 11,189.61 : x
  2. Step 2: Convert to fraction form
    20,142.27/27,795.69 = 11,189.61/x
  3. Step 3: Cross multiply
    20,142.27x = 27,795.69 × 11,189.61
  4. Step 4: Simplify right side
    20,142.27x = 311,022,930.78
  5. Step 5: Solve for x
    x = 311,022,930.78/20,142.27
  6. Step 6: Final answer
    x = 15,441.30

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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.