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Finding the Fourth Proportional to 18,249.92, 25,185.12 and 11,173.76

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Solution

The fourth proportional to 18,249.92, 25,185.12 and 11,173.76 is: 15,419.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,249.92 : 25,185.12 = 11,173.76 : x
  2. Step 2: Convert to fraction form
    18,249.92/25,185.12 = 11,173.76/x
  3. Step 3: Cross multiply
    18,249.92x = 25,185.12 × 11,173.76
  4. Step 4: Simplify right side
    18,249.92x = 281,412,486.45
  5. Step 5: Solve for x
    x = 281,412,486.45/18,249.92
  6. Step 6: Final answer
    x = 15,419.93

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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.