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Finding the Fourth Proportional to 11,709.09, 17,559.98 and 3,916.08

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Solution

The fourth proportional to 11,709.09, 17,559.98 and 3,916.08 is: 5,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,709.09 : 17,559.98 = 3,916.08 : x
  2. Step 2: Convert to fraction form
    11,709.09/17,559.98 = 3,916.08/x
  3. Step 3: Cross multiply
    11,709.09x = 17,559.98 × 3,916.08
  4. Step 4: Simplify right side
    11,709.09x = 68,766,286.48
  5. Step 5: Solve for x
    x = 68,766,286.48/11,709.09
  6. Step 6: Final answer
    x = 5,872.90

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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.