Home / 20,189.21-27,861.66-11,237.70

Finding the Fourth Proportional to 20,189.21, 27,861.66 and 11,237.70

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Solution

The fourth proportional to 20,189.21, 27,861.66 and 11,237.70 is: 15,508.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.21 : 27,861.66 = 11,237.70 : x
  2. Step 2: Convert to fraction form
    20,189.21/27,861.66 = 11,237.70/x
  3. Step 3: Cross multiply
    20,189.21x = 27,861.66 × 11,237.70
  4. Step 4: Simplify right side
    20,189.21x = 313,100,976.58
  5. Step 5: Solve for x
    x = 313,100,976.58/20,189.21
  6. Step 6: Final answer
    x = 15,508.33

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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.