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Finding the Fourth Proportional to 20,892.52, 31,525.09 and 20,082.52

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Solution

The fourth proportional to 20,892.52, 31,525.09 and 20,082.52 is: 30,302.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.52 : 31,525.09 = 20,082.52 : x
  2. Step 2: Convert to fraction form
    20,892.52/31,525.09 = 20,082.52/x
  3. Step 3: Cross multiply
    20,892.52x = 31,525.09 × 20,082.52
  4. Step 4: Simplify right side
    20,892.52x = 633,103,250.43
  5. Step 5: Solve for x
    x = 633,103,250.43/20,892.52
  6. Step 6: Final answer
    x = 30,302.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.