Home / 38,791.61-58,078.99-20,958.38

Finding the Fourth Proportional to 38,791.61, 58,078.99 and 20,958.38

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Solution

The fourth proportional to 38,791.61, 58,078.99 and 20,958.38 is: 31,378.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,791.61 : 58,078.99 = 20,958.38 : x
  2. Step 2: Convert to fraction form
    38,791.61/58,078.99 = 20,958.38/x
  3. Step 3: Cross multiply
    38,791.61x = 58,078.99 × 20,958.38
  4. Step 4: Simplify right side
    38,791.61x = 1,217,241,542.44
  5. Step 5: Solve for x
    x = 1,217,241,542.44/38,791.61
  6. Step 6: Final answer
    x = 31,378.99

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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.