Home / 20,145.36-30,218.10-6,818.46

Finding the Fourth Proportional to 20,145.36, 30,218.10 and 6,818.46

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Solution

The fourth proportional to 20,145.36, 30,218.10 and 6,818.46 is: 10,227.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.36 : 30,218.10 = 6,818.46 : x
  2. Step 2: Convert to fraction form
    20,145.36/30,218.10 = 6,818.46/x
  3. Step 3: Cross multiply
    20,145.36x = 30,218.10 × 6,818.46
  4. Step 4: Simplify right side
    20,145.36x = 206,040,906.13
  5. Step 5: Solve for x
    x = 206,040,906.13/20,145.36
  6. Step 6: Final answer
    x = 10,227.71

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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.