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Finding the Fourth Proportional to 18,805.26, 25,944.40 and 11,251.81

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Solution

The fourth proportional to 18,805.26, 25,944.40 and 11,251.81 is: 15,523.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.26 : 25,944.40 = 11,251.81 : x
  2. Step 2: Convert to fraction form
    18,805.26/25,944.40 = 11,251.81/x
  3. Step 3: Cross multiply
    18,805.26x = 25,944.40 × 11,251.81
  4. Step 4: Simplify right side
    18,805.26x = 291,921,459.36
  5. Step 5: Solve for x
    x = 291,921,459.36/18,805.26
  6. Step 6: Final answer
    x = 15,523.39

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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.