Home / 20,163.05-30,240.62-19,162.88

Finding the Fourth Proportional to 20,163.05, 30,240.62 and 19,162.88

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Solution

The fourth proportional to 20,163.05, 30,240.62 and 19,162.88 is: 28,740.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.05 : 30,240.62 = 19,162.88 : x
  2. Step 2: Convert to fraction form
    20,163.05/30,240.62 = 19,162.88/x
  3. Step 3: Cross multiply
    20,163.05x = 30,240.62 × 19,162.88
  4. Step 4: Simplify right side
    20,163.05x = 579,497,372.19
  5. Step 5: Solve for x
    x = 579,497,372.19/20,163.05
  6. Step 6: Final answer
    x = 28,740.56

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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.