Home / 12,286.56-16,819.80-12,198.72

Finding the Fourth Proportional to 12,286.56, 16,819.80 and 12,198.72

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Solution

The fourth proportional to 12,286.56, 16,819.80 and 12,198.72 is: 16,699.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.56 : 16,819.80 = 12,198.72 : x
  2. Step 2: Convert to fraction form
    12,286.56/16,819.80 = 12,198.72/x
  3. Step 3: Cross multiply
    12,286.56x = 16,819.80 × 12,198.72
  4. Step 4: Simplify right side
    12,286.56x = 205,180,030.66
  5. Step 5: Solve for x
    x = 205,180,030.66/12,286.56
  6. Step 6: Final answer
    x = 16,699.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.