Home / 12,636.44-18,939.27-8,939.73

Finding the Fourth Proportional to 12,636.44, 18,939.27 and 8,939.73

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Solution

The fourth proportional to 12,636.44, 18,939.27 and 8,939.73 is: 13,398.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.44 : 18,939.27 = 8,939.73 : x
  2. Step 2: Convert to fraction form
    12,636.44/18,939.27 = 8,939.73/x
  3. Step 3: Cross multiply
    12,636.44x = 18,939.27 × 8,939.73
  4. Step 4: Simplify right side
    12,636.44x = 169,311,960.20
  5. Step 5: Solve for x
    x = 169,311,960.20/12,636.44
  6. Step 6: Final answer
    x = 13,398.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.