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Finding the Fourth Proportional to 12,163.88, 16,786.16 and 6,574.88

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Solution

The fourth proportional to 12,163.88, 16,786.16 and 6,574.88 is: 9,073.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.88 : 16,786.16 = 6,574.88 : x
  2. Step 2: Convert to fraction form
    12,163.88/16,786.16 = 6,574.88/x
  3. Step 3: Cross multiply
    12,163.88x = 16,786.16 × 6,574.88
  4. Step 4: Simplify right side
    12,163.88x = 110,366,870.86
  5. Step 5: Solve for x
    x = 110,366,870.86/12,163.88
  6. Step 6: Final answer
    x = 9,073.33

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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.