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Finding the Fourth Proportional to 12,396.92, 17,103.56 and 7,087.95

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Solution

The fourth proportional to 12,396.92, 17,103.56 and 7,087.95 is: 9,778.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,396.92 : 17,103.56 = 7,087.95 : x
  2. Step 2: Convert to fraction form
    12,396.92/17,103.56 = 7,087.95/x
  3. Step 3: Cross multiply
    12,396.92x = 17,103.56 × 7,087.95
  4. Step 4: Simplify right side
    12,396.92x = 121,229,142.66
  5. Step 5: Solve for x
    x = 121,229,142.66/12,396.92
  6. Step 6: Final answer
    x = 9,778.98

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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.