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Finding the Fourth Proportional to 18,169.86, 27,235.20 and 8,790.06

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Solution

The fourth proportional to 18,169.86, 27,235.20 and 8,790.06 is: 13,175.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,169.86 : 27,235.20 = 8,790.06 : x
  2. Step 2: Convert to fraction form
    18,169.86/27,235.20 = 8,790.06/x
  3. Step 3: Cross multiply
    18,169.86x = 27,235.20 × 8,790.06
  4. Step 4: Simplify right side
    18,169.86x = 239,399,042.11
  5. Step 5: Solve for x
    x = 239,399,042.11/18,169.86
  6. Step 6: Final answer
    x = 13,175.61

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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.