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Finding the Fourth Proportional to 12,163.79, 16,786.04 and 6,574.79

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Solution

The fourth proportional to 12,163.79, 16,786.04 and 6,574.79 is: 9,073.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.79 : 16,786.04 = 6,574.79 : x
  2. Step 2: Convert to fraction form
    12,163.79/16,786.04 = 6,574.79/x
  3. Step 3: Cross multiply
    12,163.79x = 16,786.04 × 6,574.79
  4. Step 4: Simplify right side
    12,163.79x = 110,364,697.02
  5. Step 5: Solve for x
    x = 110,364,697.02/12,163.79
  6. Step 6: Final answer
    x = 9,073.21

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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.