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Finding the Fourth Proportional to 20,647.60, 30,906.60 and 16,241.20

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Solution

The fourth proportional to 20,647.60, 30,906.60 and 16,241.20 is: 24,310.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.60 : 30,906.60 = 16,241.20 : x
  2. Step 2: Convert to fraction form
    20,647.60/30,906.60 = 16,241.20/x
  3. Step 3: Cross multiply
    20,647.60x = 30,906.60 × 16,241.20
  4. Step 4: Simplify right side
    20,647.60x = 501,960,271.92
  5. Step 5: Solve for x
    x = 501,960,271.92/20,647.60
  6. Step 6: Final answer
    x = 24,310.83

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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.