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Finding the Fourth Proportional to 18,189.56, 27,259.44 and 13,743.56

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Solution

The fourth proportional to 18,189.56, 27,259.44 and 13,743.56 is: 20,596.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.56 : 27,259.44 = 13,743.56 : x
  2. Step 2: Convert to fraction form
    18,189.56/27,259.44 = 13,743.56/x
  3. Step 3: Cross multiply
    18,189.56x = 27,259.44 × 13,743.56
  4. Step 4: Simplify right side
    18,189.56x = 374,641,749.21
  5. Step 5: Solve for x
    x = 374,641,749.21/18,189.56
  6. Step 6: Final answer
    x = 20,596.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.