Home / 20,142.27-27,796.30-11,190.60

Finding the Fourth Proportional to 20,142.27, 27,796.30 and 11,190.60

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Solution

The fourth proportional to 20,142.27, 27,796.30 and 11,190.60 is: 15,443.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.27 : 27,796.30 = 11,190.60 : x
  2. Step 2: Convert to fraction form
    20,142.27/27,796.30 = 11,190.60/x
  3. Step 3: Cross multiply
    20,142.27x = 27,796.30 × 11,190.60
  4. Step 4: Simplify right side
    20,142.27x = 311,057,246.80
  5. Step 5: Solve for x
    x = 311,057,246.80/20,142.27
  6. Step 6: Final answer
    x = 15,443.01

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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.