Home / 30,991.34-42,766.85-16,843.88

Finding the Fourth Proportional to 30,991.34, 42,766.85 and 16,843.88

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Solution

The fourth proportional to 30,991.34, 42,766.85 and 16,843.88 is: 23,243.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,991.34 : 42,766.85 = 16,843.88 : x
  2. Step 2: Convert to fraction form
    30,991.34/42,766.85 = 16,843.88/x
  3. Step 3: Cross multiply
    30,991.34x = 42,766.85 × 16,843.88
  4. Step 4: Simplify right side
    30,991.34x = 720,359,605.16
  5. Step 5: Solve for x
    x = 720,359,605.16/30,991.34
  6. Step 6: Final answer
    x = 23,243.90

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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.