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Finding the Fourth Proportional to 18,107.82, 27,162.95 and 4,959.09

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Solution

The fourth proportional to 18,107.82, 27,162.95 and 4,959.09 is: 7,438.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,107.82 : 27,162.95 = 4,959.09 : x
  2. Step 2: Convert to fraction form
    18,107.82/27,162.95 = 4,959.09/x
  3. Step 3: Cross multiply
    18,107.82x = 27,162.95 × 4,959.09
  4. Step 4: Simplify right side
    18,107.82x = 134,703,488.92
  5. Step 5: Solve for x
    x = 134,703,488.92/18,107.82
  6. Step 6: Final answer
    x = 7,438.97

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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.