Home / 20,249.46-27,939.41-12,290.19

Finding the Fourth Proportional to 20,249.46, 27,939.41 and 12,290.19

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Solution

The fourth proportional to 20,249.46, 27,939.41 and 12,290.19 is: 16,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,249.46 : 27,939.41 = 12,290.19 : x
  2. Step 2: Convert to fraction form
    20,249.46/27,939.41 = 12,290.19/x
  3. Step 3: Cross multiply
    20,249.46x = 27,939.41 × 12,290.19
  4. Step 4: Simplify right side
    20,249.46x = 343,380,595.94
  5. Step 5: Solve for x
    x = 343,380,595.94/20,249.46
  6. Step 6: Final answer
    x = 16,957.52

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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.