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Finding the Fourth Proportional to 18,625.32, 27,965.32 and 11,635.12

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Solution

The fourth proportional to 18,625.32, 27,965.32 and 11,635.12 is: 17,469.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,625.32 : 27,965.32 = 11,635.12 : x
  2. Step 2: Convert to fraction form
    18,625.32/27,965.32 = 11,635.12/x
  3. Step 3: Cross multiply
    18,625.32x = 27,965.32 × 11,635.12
  4. Step 4: Simplify right side
    18,625.32x = 325,379,859.91
  5. Step 5: Solve for x
    x = 325,379,859.91/18,625.32
  6. Step 6: Final answer
    x = 17,469.76

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1.5x scale

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.