Home / 20,986.27-31,490.33-9,296.75

Finding the Fourth Proportional to 20,986.27, 31,490.33 and 9,296.75

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Solution

The fourth proportional to 20,986.27, 31,490.33 and 9,296.75 is: 13,949.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986.27 : 31,490.33 = 9,296.75 : x
  2. Step 2: Convert to fraction form
    20,986.27/31,490.33 = 9,296.75/x
  3. Step 3: Cross multiply
    20,986.27x = 31,490.33 × 9,296.75
  4. Step 4: Simplify right side
    20,986.27x = 292,757,725.43
  5. Step 5: Solve for x
    x = 292,757,725.43/20,986.27
  6. Step 6: Final answer
    x = 13,949.96

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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.