Home / 20,320.17-30,481.79-5,529.21

Finding the Fourth Proportional to 20,320.17, 30,481.79 and 5,529.21

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Solution

The fourth proportional to 20,320.17, 30,481.79 and 5,529.21 is: 8,294.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.17 : 30,481.79 = 5,529.21 : x
  2. Step 2: Convert to fraction form
    20,320.17/30,481.79 = 5,529.21/x
  3. Step 3: Cross multiply
    20,320.17x = 30,481.79 × 5,529.21
  4. Step 4: Simplify right side
    20,320.17x = 168,540,190.44
  5. Step 5: Solve for x
    x = 168,540,190.44/20,320.17
  6. Step 6: Final answer
    x = 8,294.23

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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.