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Finding the Fourth Proportional to 12,392.14, 18,576.36 and 7,936.12

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Solution

The fourth proportional to 12,392.14, 18,576.36 and 7,936.12 is: 11,896.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,392.14 : 18,576.36 = 7,936.12 : x
  2. Step 2: Convert to fraction form
    12,392.14/18,576.36 = 7,936.12/x
  3. Step 3: Cross multiply
    12,392.14x = 18,576.36 × 7,936.12
  4. Step 4: Simplify right side
    12,392.14x = 147,424,222.12
  5. Step 5: Solve for x
    x = 147,424,222.12/12,392.14
  6. Step 6: Final answer
    x = 11,896.59

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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.