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Finding the Fourth Proportional to 11,677.10, 17,515.49 and 2,912.09

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Solution

The fourth proportional to 11,677.10, 17,515.49 and 2,912.09 is: 4,368.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,677.10 : 17,515.49 = 2,912.09 : x
  2. Step 2: Convert to fraction form
    11,677.10/17,515.49 = 2,912.09/x
  3. Step 3: Cross multiply
    11,677.10x = 17,515.49 × 2,912.09
  4. Step 4: Simplify right side
    11,677.10x = 51,006,581.14
  5. Step 5: Solve for x
    x = 51,006,581.14/11,677.10
  6. Step 6: Final answer
    x = 4,368.09

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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.