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Finding the Fourth Proportional to 12,396.79, 17,103.04 and 8,150.11

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Solution

The fourth proportional to 12,396.79, 17,103.04 and 8,150.11 is: 11,244.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,396.79 : 17,103.04 = 8,150.11 : x
  2. Step 2: Convert to fraction form
    12,396.79/17,103.04 = 8,150.11/x
  3. Step 3: Cross multiply
    12,396.79x = 17,103.04 × 8,150.11
  4. Step 4: Simplify right side
    12,396.79x = 139,391,657.33
  5. Step 5: Solve for x
    x = 139,391,657.33/12,396.79
  6. Step 6: Final answer
    x = 11,244.17

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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.