Home / 20,109.38-27,750.96-11,727.50

Finding the Fourth Proportional to 20,109.38, 27,750.96 and 11,727.50

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Solution

The fourth proportional to 20,109.38, 27,750.96 and 11,727.50 is: 16,183.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.38 : 27,750.96 = 11,727.50 : x
  2. Step 2: Convert to fraction form
    20,109.38/27,750.96 = 11,727.50/x
  3. Step 3: Cross multiply
    20,109.38x = 27,750.96 × 11,727.50
  4. Step 4: Simplify right side
    20,109.38x = 325,449,383.40
  5. Step 5: Solve for x
    x = 325,449,383.40/20,109.38
  6. Step 6: Final answer
    x = 16,183.96

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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.