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Finding the Fourth Proportional to 20,223.62, 30,335.43 and 20,194.42

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Solution

The fourth proportional to 20,223.62, 30,335.43 and 20,194.42 is: 30,291.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,223.62 : 30,335.43 = 20,194.42 : x
  2. Step 2: Convert to fraction form
    20,223.62/30,335.43 = 20,194.42/x
  3. Step 3: Cross multiply
    20,223.62x = 30,335.43 × 20,194.42
  4. Step 4: Simplify right side
    20,223.62x = 612,606,262.62
  5. Step 5: Solve for x
    x = 612,606,262.62/20,223.62
  6. Step 6: Final answer
    x = 30,291.62

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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.