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Finding the Fourth Proportional to 18,396.54, 27,591.54 and 7,872.48

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Solution

The fourth proportional to 18,396.54, 27,591.54 and 7,872.48 is: 11,807.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.54 : 27,591.54 = 7,872.48 : x
  2. Step 2: Convert to fraction form
    18,396.54/27,591.54 = 7,872.48/x
  3. Step 3: Cross multiply
    18,396.54x = 27,591.54 × 7,872.48
  4. Step 4: Simplify right side
    18,396.54x = 217,213,846.82
  5. Step 5: Solve for x
    x = 217,213,846.82/18,396.54
  6. Step 6: Final answer
    x = 11,807.32

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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.