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Finding the Fourth Proportional to 20,203.74, 30,249.72 and 10,321.74

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Solution

The fourth proportional to 20,203.74, 30,249.72 and 10,321.74 is: 15,454.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.74 : 30,249.72 = 10,321.74 : x
  2. Step 2: Convert to fraction form
    20,203.74/30,249.72 = 10,321.74/x
  3. Step 3: Cross multiply
    20,203.74x = 30,249.72 × 10,321.74
  4. Step 4: Simplify right side
    20,203.74x = 312,229,744.91
  5. Step 5: Solve for x
    x = 312,229,744.91/20,203.74
  6. Step 6: Final answer
    x = 15,454.06

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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.