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Finding the Fourth Proportional to 18,379.29, 27,558.50 and 16,811.94

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Solution

The fourth proportional to 18,379.29, 27,558.50 and 16,811.94 is: 25,208.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.29 : 27,558.50 = 16,811.94 : x
  2. Step 2: Convert to fraction form
    18,379.29/27,558.50 = 16,811.94/x
  3. Step 3: Cross multiply
    18,379.29x = 27,558.50 × 16,811.94
  4. Step 4: Simplify right side
    18,379.29x = 463,311,764.43
  5. Step 5: Solve for x
    x = 463,311,764.43/18,379.29
  6. Step 6: Final answer
    x = 25,208.36

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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.