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Finding the Fourth Proportional to 39,400.20, 59,067.90 and 20,932.20

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Solution

The fourth proportional to 39,400.20, 59,067.90 and 20,932.20 is: 31,381.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,400.20 : 59,067.90 = 20,932.20 : x
  2. Step 2: Convert to fraction form
    39,400.20/59,067.90 = 20,932.20/x
  3. Step 3: Cross multiply
    39,400.20x = 59,067.90 × 20,932.20
  4. Step 4: Simplify right side
    39,400.20x = 1,236,421,096.38
  5. Step 5: Solve for x
    x = 1,236,421,096.38/39,400.20
  6. Step 6: Final answer
    x = 31,381.09

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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.