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Finding the Fourth Proportional to 18,469.28, 27,682.88 and 7,936.16

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Solution

The fourth proportional to 18,469.28, 27,682.88 and 7,936.16 is: 11,895.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.28 : 27,682.88 = 7,936.16 : x
  2. Step 2: Convert to fraction form
    18,469.28/27,682.88 = 7,936.16/x
  3. Step 3: Cross multiply
    18,469.28x = 27,682.88 × 7,936.16
  4. Step 4: Simplify right side
    18,469.28x = 219,695,764.94
  5. Step 5: Solve for x
    x = 219,695,764.94/18,469.28
  6. Step 6: Final answer
    x = 11,895.20

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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.