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Finding the Fourth Proportional to 20,334.80, 30,472.44 and 11,550.80

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Solution

The fourth proportional to 20,334.80, 30,472.44 and 11,550.80 is: 17,309.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.80 : 30,472.44 = 11,550.80 : x
  2. Step 2: Convert to fraction form
    20,334.80/30,472.44 = 11,550.80/x
  3. Step 3: Cross multiply
    20,334.80x = 30,472.44 × 11,550.80
  4. Step 4: Simplify right side
    20,334.80x = 351,981,059.95
  5. Step 5: Solve for x
    x = 351,981,059.95/20,334.80
  6. Step 6: Final answer
    x = 17,309.30

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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.