Home / 20,857.27-31,286.01-5,274.91

Finding the Fourth Proportional to 20,857.27, 31,286.01 and 5,274.91

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Solution

The fourth proportional to 20,857.27, 31,286.01 and 5,274.91 is: 7,912.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857.27 : 31,286.01 = 5,274.91 : x
  2. Step 2: Convert to fraction form
    20,857.27/31,286.01 = 5,274.91/x
  3. Step 3: Cross multiply
    20,857.27x = 31,286.01 × 5,274.91
  4. Step 4: Simplify right side
    20,857.27x = 165,030,887.01
  5. Step 5: Solve for x
    x = 165,030,887.01/20,857.27
  6. Step 6: Final answer
    x = 7,912.39

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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.