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Finding the Fourth Proportional to 20,252.78, 30,369.76 and 6,209.21

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Solution

The fourth proportional to 20,252.78, 30,369.76 and 6,209.21 is: 9,310.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,252.78 : 30,369.76 = 6,209.21 : x
  2. Step 2: Convert to fraction form
    20,252.78/30,369.76 = 6,209.21/x
  3. Step 3: Cross multiply
    20,252.78x = 30,369.76 × 6,209.21
  4. Step 4: Simplify right side
    20,252.78x = 188,572,050.12
  5. Step 5: Solve for x
    x = 188,572,050.12/20,252.78
  6. Step 6: Final answer
    x = 9,310.92

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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.