Home / 20,086.56-30,079.80-12,192.69

Finding the Fourth Proportional to 20,086.56, 30,079.80 and 12,192.69

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Solution

The fourth proportional to 20,086.56, 30,079.80 and 12,192.69 is: 18,258.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.56 : 30,079.80 = 12,192.69 : x
  2. Step 2: Convert to fraction form
    20,086.56/30,079.80 = 12,192.69/x
  3. Step 3: Cross multiply
    20,086.56x = 30,079.80 × 12,192.69
  4. Step 4: Simplify right side
    20,086.56x = 366,753,676.66
  5. Step 5: Solve for x
    x = 366,753,676.66/20,086.56
  6. Step 6: Final answer
    x = 18,258.66

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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.