Home / 30,990.21-42,766.82-16,843.06

Finding the Fourth Proportional to 30,990.21, 42,766.82 and 16,843.06

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Solution

The fourth proportional to 30,990.21, 42,766.82 and 16,843.06 is: 23,243.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.21 : 42,766.82 = 16,843.06 : x
  2. Step 2: Convert to fraction form
    30,990.21/42,766.82 = 16,843.06/x
  3. Step 3: Cross multiply
    30,990.21x = 42,766.82 × 16,843.06
  4. Step 4: Simplify right side
    30,990.21x = 720,324,115.27
  5. Step 5: Solve for x
    x = 720,324,115.27/30,990.21
  6. Step 6: Final answer
    x = 23,243.60

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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.