Home / 20,142.54-27,795.42-11,189.88

Finding the Fourth Proportional to 20,142.54, 27,795.42 and 11,189.88

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Solution

The fourth proportional to 20,142.54, 27,795.42 and 11,189.88 is: 15,441.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.54 : 27,795.42 = 11,189.88 : x
  2. Step 2: Convert to fraction form
    20,142.54/27,795.42 = 11,189.88/x
  3. Step 3: Cross multiply
    20,142.54x = 27,795.42 × 11,189.88
  4. Step 4: Simplify right side
    20,142.54x = 311,027,414.35
  5. Step 5: Solve for x
    x = 311,027,414.35/20,142.54
  6. Step 6: Final answer
    x = 15,441.32

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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.