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Finding the Fourth Proportional to 18,476.43, 25,505.87 and 11,771.25

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Solution

The fourth proportional to 18,476.43, 25,505.87 and 11,771.25 is: 16,249.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,476.43 : 25,505.87 = 11,771.25 : x
  2. Step 2: Convert to fraction form
    18,476.43/25,505.87 = 11,771.25/x
  3. Step 3: Cross multiply
    18,476.43x = 25,505.87 × 11,771.25
  4. Step 4: Simplify right side
    18,476.43x = 300,235,913.38
  5. Step 5: Solve for x
    x = 300,235,913.38/18,476.43
  6. Step 6: Final answer
    x = 16,249.67

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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.