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Finding the Fourth Proportional to 20,648.43, 30,962.88 and 8,004.11

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Solution

The fourth proportional to 20,648.43, 30,962.88 and 8,004.11 is: 12,002.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.43 : 30,962.88 = 8,004.11 : x
  2. Step 2: Convert to fraction form
    20,648.43/30,962.88 = 8,004.11/x
  3. Step 3: Cross multiply
    20,648.43x = 30,962.88 × 8,004.11
  4. Step 4: Simplify right side
    20,648.43x = 247,830,142.62
  5. Step 5: Solve for x
    x = 247,830,142.62/20,648.43
  6. Step 6: Final answer
    x = 12,002.37

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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.