Home / 20,189.39-27,858.03-11,236.66

Finding the Fourth Proportional to 20,189.39, 27,858.03 and 11,236.66

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Solution

The fourth proportional to 20,189.39, 27,858.03 and 11,236.66 is: 15,504.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.39 : 27,858.03 = 11,236.66 : x
  2. Step 2: Convert to fraction form
    20,189.39/27,858.03 = 11,236.66/x
  3. Step 3: Cross multiply
    20,189.39x = 27,858.03 × 11,236.66
  4. Step 4: Simplify right side
    20,189.39x = 313,031,099.60
  5. Step 5: Solve for x
    x = 313,031,099.60/20,189.39
  6. Step 6: Final answer
    x = 15,504.74

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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.