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Finding the Fourth Proportional to 11,640.90, 17,472.34 and 7,748.04

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Solution

The fourth proportional to 11,640.90, 17,472.34 and 7,748.04 is: 11,629.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,640.90 : 17,472.34 = 7,748.04 : x
  2. Step 2: Convert to fraction form
    11,640.90/17,472.34 = 7,748.04/x
  3. Step 3: Cross multiply
    11,640.90x = 17,472.34 × 7,748.04
  4. Step 4: Simplify right side
    11,640.90x = 135,376,389.21
  5. Step 5: Solve for x
    x = 135,376,389.21/11,640.90
  6. Step 6: Final answer
    x = 11,629.37

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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.