Home / 11,129.80-16,696.94-4,109.86

Finding the Fourth Proportional to 11,129.80, 16,696.94 and 4,109.86

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Solution

The fourth proportional to 11,129.80, 16,696.94 and 4,109.86 is: 6,165.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.80 : 16,696.94 = 4,109.86 : x
  2. Step 2: Convert to fraction form
    11,129.80/16,696.94 = 4,109.86/x
  3. Step 3: Cross multiply
    11,129.80x = 16,696.94 × 4,109.86
  4. Step 4: Simplify right side
    11,129.80x = 68,622,085.83
  5. Step 5: Solve for x
    x = 68,622,085.83/11,129.80
  6. Step 6: Final answer
    x = 6,165.62

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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.