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Finding the Fourth Proportional to 18,379.26, 27,564.33 and 8,509.02

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Solution

The fourth proportional to 18,379.26, 27,564.33 and 8,509.02 is: 12,761.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.26 : 27,564.33 = 8,509.02 : x
  2. Step 2: Convert to fraction form
    18,379.26/27,564.33 = 8,509.02/x
  3. Step 3: Cross multiply
    18,379.26x = 27,564.33 × 8,509.02
  4. Step 4: Simplify right side
    18,379.26x = 234,545,435.26
  5. Step 5: Solve for x
    x = 234,545,435.26/18,379.26
  6. Step 6: Final answer
    x = 12,761.42

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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.