Home / 12,187.05-16,818.14-6,882.21

Finding the Fourth Proportional to 12,187.05, 16,818.14 and 6,882.21

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Solution

The fourth proportional to 12,187.05, 16,818.14 and 6,882.21 is: 9,497.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.05 : 16,818.14 = 6,882.21 : x
  2. Step 2: Convert to fraction form
    12,187.05/16,818.14 = 6,882.21/x
  3. Step 3: Cross multiply
    12,187.05x = 16,818.14 × 6,882.21
  4. Step 4: Simplify right side
    12,187.05x = 115,745,936.88
  5. Step 5: Solve for x
    x = 115,745,936.88/12,187.05
  6. Step 6: Final answer
    x = 9,497.45

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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.