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Finding the Fourth Proportional to 12,408.39, 18,614.63 and 5,751.54

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Solution

The fourth proportional to 12,408.39, 18,614.63 and 5,751.54 is: 8,628.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.39 : 18,614.63 = 5,751.54 : x
  2. Step 2: Convert to fraction form
    12,408.39/18,614.63 = 5,751.54/x
  3. Step 3: Cross multiply
    12,408.39x = 18,614.63 × 5,751.54
  4. Step 4: Simplify right side
    12,408.39x = 107,062,789.03
  5. Step 5: Solve for x
    x = 107,062,789.03/12,408.39
  6. Step 6: Final answer
    x = 8,628.26

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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.