Home / 20,837.63-31,229.26-18,198.87

Finding the Fourth Proportional to 20,837.63, 31,229.26 and 18,198.87

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Solution

The fourth proportional to 20,837.63, 31,229.26 and 18,198.87 is: 27,274.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.63 : 31,229.26 = 18,198.87 : x
  2. Step 2: Convert to fraction form
    20,837.63/31,229.26 = 18,198.87/x
  3. Step 3: Cross multiply
    20,837.63x = 31,229.26 × 18,198.87
  4. Step 4: Simplify right side
    20,837.63x = 568,337,242.94
  5. Step 5: Solve for x
    x = 568,337,242.94/20,837.63
  6. Step 6: Final answer
    x = 27,274.56

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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.