Home / 20,188.74-27,860.25-11,236.09

Finding the Fourth Proportional to 20,188.74, 27,860.25 and 11,236.09

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Solution

The fourth proportional to 20,188.74, 27,860.25 and 11,236.09 is: 15,505.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.74 : 27,860.25 = 11,236.09 : x
  2. Step 2: Convert to fraction form
    20,188.74/27,860.25 = 11,236.09/x
  3. Step 3: Cross multiply
    20,188.74x = 27,860.25 × 11,236.09
  4. Step 4: Simplify right side
    20,188.74x = 313,040,276.42
  5. Step 5: Solve for x
    x = 313,040,276.42/20,188.74
  6. Step 6: Final answer
    x = 15,505.69

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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.