Home / 20,162.05-30,239.12-19,161.88

Finding the Fourth Proportional to 20,162.05, 30,239.12 and 19,161.88

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Solution

The fourth proportional to 20,162.05, 30,239.12 and 19,161.88 is: 28,739.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.05 : 30,239.12 = 19,161.88 : x
  2. Step 2: Convert to fraction form
    20,162.05/30,239.12 = 19,161.88/x
  3. Step 3: Cross multiply
    20,162.05x = 30,239.12 × 19,161.88
  4. Step 4: Simplify right side
    20,162.05x = 579,438,361.05
  5. Step 5: Solve for x
    x = 579,438,361.05/20,162.05
  6. Step 6: Final answer
    x = 28,739.06

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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.