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Finding the Fourth Proportional to 12,696.96, 17,521.68 and 7,108

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Solution

The fourth proportional to 12,696.96, 17,521.68 and 7,108 is: 9,808.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696.96 : 17,521.68 = 7,108 : x
  2. Step 2: Convert to fraction form
    12,696.96/17,521.68 = 7,108/x
  3. Step 3: Cross multiply
    12,696.96x = 17,521.68 × 7,108
  4. Step 4: Simplify right side
    12,696.96x = 124,544,101.44
  5. Step 5: Solve for x
    x = 124,544,101.44/12,696.96
  6. Step 6: Final answer
    x = 9,808.97

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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.