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Finding the Fourth Proportional to 12,641.97, 18,952.02 and 6,791.76

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Solution

The fourth proportional to 12,641.97, 18,952.02 and 6,791.76 is: 10,181.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.97 : 18,952.02 = 6,791.76 : x
  2. Step 2: Convert to fraction form
    12,641.97/18,952.02 = 6,791.76/x
  3. Step 3: Cross multiply
    12,641.97x = 18,952.02 × 6,791.76
  4. Step 4: Simplify right side
    12,641.97x = 128,717,571.36
  5. Step 5: Solve for x
    x = 128,717,571.36/12,641.97
  6. Step 6: Final answer
    x = 10,181.77

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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.