Home / 20,997.96-31,486.67-9,161.73

Finding the Fourth Proportional to 20,997.96, 31,486.67 and 9,161.73

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Solution

The fourth proportional to 20,997.96, 31,486.67 and 9,161.73 is: 13,738.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.96 : 31,486.67 = 9,161.73 : x
  2. Step 2: Convert to fraction form
    20,997.96/31,486.67 = 9,161.73/x
  3. Step 3: Cross multiply
    20,997.96x = 31,486.67 × 9,161.73
  4. Step 4: Simplify right side
    20,997.96x = 288,472,497.78
  5. Step 5: Solve for x
    x = 288,472,497.78/20,997.96
  6. Step 6: Final answer
    x = 13,738.12

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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.