Home / 20,188.85-27,857.25-11,236.10

Finding the Fourth Proportional to 20,188.85, 27,857.25 and 11,236.10

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Solution

The fourth proportional to 20,188.85, 27,857.25 and 11,236.10 is: 15,503.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.85 : 27,857.25 = 11,236.10 : x
  2. Step 2: Convert to fraction form
    20,188.85/27,857.25 = 11,236.10/x
  3. Step 3: Cross multiply
    20,188.85x = 27,857.25 × 11,236.10
  4. Step 4: Simplify right side
    20,188.85x = 313,006,707.44
  5. Step 5: Solve for x
    x = 313,006,707.44/20,188.85
  6. Step 6: Final answer
    x = 15,503.94

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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.