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Finding the Fourth Proportional to 12,231.63, 18,344.49 and 5,651.49

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Solution

The fourth proportional to 12,231.63, 18,344.49 and 5,651.49 is: 8,475.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231.63 : 18,344.49 = 5,651.49 : x
  2. Step 2: Convert to fraction form
    12,231.63/18,344.49 = 5,651.49/x
  3. Step 3: Cross multiply
    12,231.63x = 18,344.49 × 5,651.49
  4. Step 4: Simplify right side
    12,231.63x = 103,673,701.79
  5. Step 5: Solve for x
    x = 103,673,701.79/12,231.63
  6. Step 6: Final answer
    x = 8,475.87

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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.