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Finding the Fourth Proportional to 17,128.21, 25,706.90 and 6,747.25

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Solution

The fourth proportional to 17,128.21, 25,706.90 and 6,747.25 is: 10,126.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,128.21 : 25,706.90 = 6,747.25 : x
  2. Step 2: Convert to fraction form
    17,128.21/25,706.90 = 6,747.25/x
  3. Step 3: Cross multiply
    17,128.21x = 25,706.90 × 6,747.25
  4. Step 4: Simplify right side
    17,128.21x = 173,450,881.03
  5. Step 5: Solve for x
    x = 173,450,881.03/17,128.21
  6. Step 6: Final answer
    x = 10,126.62

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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.