Home / 20,728.26-31,096.92-7,580.30

Finding the Fourth Proportional to 20,728.26, 31,096.92 and 7,580.30

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Solution

The fourth proportional to 20,728.26, 31,096.92 and 7,580.30 is: 11,372.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.26 : 31,096.92 = 7,580.30 : x
  2. Step 2: Convert to fraction form
    20,728.26/31,096.92 = 7,580.30/x
  3. Step 3: Cross multiply
    20,728.26x = 31,096.92 × 7,580.30
  4. Step 4: Simplify right side
    20,728.26x = 235,723,982.68
  5. Step 5: Solve for x
    x = 235,723,982.68/20,728.26
  6. Step 6: Final answer
    x = 11,372.11

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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.