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Finding the Fourth Proportional to 20,168.10, 30,252.54 and 7,344.78

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Solution

The fourth proportional to 20,168.10, 30,252.54 and 7,344.78 is: 11,017.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.10 : 30,252.54 = 7,344.78 : x
  2. Step 2: Convert to fraction form
    20,168.10/30,252.54 = 7,344.78/x
  3. Step 3: Cross multiply
    20,168.10x = 30,252.54 × 7,344.78
  4. Step 4: Simplify right side
    20,168.10x = 222,198,250.74
  5. Step 5: Solve for x
    x = 222,198,250.74/20,168.10
  6. Step 6: Final answer
    x = 11,017.31

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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.