Home / 12,186.80-16,817.68-6,882.64

Finding the Fourth Proportional to 12,186.80, 16,817.68 and 6,882.64

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Solution

The fourth proportional to 12,186.80, 16,817.68 and 6,882.64 is: 9,497.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.80 : 16,817.68 = 6,882.64 : x
  2. Step 2: Convert to fraction form
    12,186.80/16,817.68 = 6,882.64/x
  3. Step 3: Cross multiply
    12,186.80x = 16,817.68 × 6,882.64
  4. Step 4: Simplify right side
    12,186.80x = 115,750,037.08
  5. Step 5: Solve for x
    x = 115,750,037.08/12,186.80
  6. Step 6: Final answer
    x = 9,497.98

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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.