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Finding the Fourth Proportional to 12,071.62, 16,658.87 and 6,694.43

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Solution

The fourth proportional to 12,071.62, 16,658.87 and 6,694.43 is: 9,238.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,071.62 : 16,658.87 = 6,694.43 : x
  2. Step 2: Convert to fraction form
    12,071.62/16,658.87 = 6,694.43/x
  3. Step 3: Cross multiply
    12,071.62x = 16,658.87 × 6,694.43
  4. Step 4: Simplify right side
    12,071.62x = 111,521,700.54
  5. Step 5: Solve for x
    x = 111,521,700.54/12,071.62
  6. Step 6: Final answer
    x = 9,238.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.