Home / 11,911.15-16,436.31-6,605.95

Finding the Fourth Proportional to 11,911.15, 16,436.31 and 6,605.95

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Solution

The fourth proportional to 11,911.15, 16,436.31 and 6,605.95 is: 9,115.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,911.15 : 16,436.31 = 6,605.95 : x
  2. Step 2: Convert to fraction form
    11,911.15/16,436.31 = 6,605.95/x
  3. Step 3: Cross multiply
    11,911.15x = 16,436.31 × 6,605.95
  4. Step 4: Simplify right side
    11,911.15x = 108,577,442.04
  5. Step 5: Solve for x
    x = 108,577,442.04/11,911.15
  6. Step 6: Final answer
    x = 9,115.61

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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.