Home / 30,986.92-42,760.20-16,839.66

Finding the Fourth Proportional to 30,986.92, 42,760.20 and 16,839.66

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Solution

The fourth proportional to 30,986.92, 42,760.20 and 16,839.66 is: 23,237.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.92 : 42,760.20 = 16,839.66 : x
  2. Step 2: Convert to fraction form
    30,986.92/42,760.20 = 16,839.66/x
  3. Step 3: Cross multiply
    30,986.92x = 42,760.20 × 16,839.66
  4. Step 4: Simplify right side
    30,986.92x = 720,067,229.53
  5. Step 5: Solve for x
    x = 720,067,229.53/30,986.92
  6. Step 6: Final answer
    x = 23,237.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.