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Finding the Fourth Proportional to 18,299.39, 25,243.90 and 12,249.88

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Solution

The fourth proportional to 18,299.39, 25,243.90 and 12,249.88 is: 16,898.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.39 : 25,243.90 = 12,249.88 : x
  2. Step 2: Convert to fraction form
    18,299.39/25,243.90 = 12,249.88/x
  3. Step 3: Cross multiply
    18,299.39x = 25,243.90 × 12,249.88
  4. Step 4: Simplify right side
    18,299.39x = 309,234,652.00
  5. Step 5: Solve for x
    x = 309,234,652.00/18,299.39
  6. Step 6: Final answer
    x = 16,898.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.