Home / 20,188.78-27,861.82-11,236.25

Finding the Fourth Proportional to 20,188.78, 27,861.82 and 11,236.25

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Solution

The fourth proportional to 20,188.78, 27,861.82 and 11,236.25 is: 15,506.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.78 : 27,861.82 = 11,236.25 : x
  2. Step 2: Convert to fraction form
    20,188.78/27,861.82 = 11,236.25/x
  3. Step 3: Cross multiply
    20,188.78x = 27,861.82 × 11,236.25
  4. Step 4: Simplify right side
    20,188.78x = 313,062,416.54
  5. Step 5: Solve for x
    x = 313,062,416.54/20,188.78
  6. Step 6: Final answer
    x = 15,506.75

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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.