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Finding the Fourth Proportional to 12,396.96, 17,092.92 and 8,623.44

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Solution

The fourth proportional to 12,396.96, 17,092.92 and 8,623.44 is: 11,889.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,396.96 : 17,092.92 = 8,623.44 : x
  2. Step 2: Convert to fraction form
    12,396.96/17,092.92 = 8,623.44/x
  3. Step 3: Cross multiply
    12,396.96x = 17,092.92 × 8,623.44
  4. Step 4: Simplify right side
    12,396.96x = 147,399,770.04
  5. Step 5: Solve for x
    x = 147,399,770.04/12,396.96
  6. Step 6: Final answer
    x = 11,889.99

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1.5x scale

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.