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Finding the Fourth Proportional to 12,326.96, 18,489.72 and 3,561.68

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Solution

The fourth proportional to 12,326.96, 18,489.72 and 3,561.68 is: 5,342.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,326.96 : 18,489.72 = 3,561.68 : x
  2. Step 2: Convert to fraction form
    12,326.96/18,489.72 = 3,561.68/x
  3. Step 3: Cross multiply
    12,326.96x = 18,489.72 × 3,561.68
  4. Step 4: Simplify right side
    12,326.96x = 65,854,465.93
  5. Step 5: Solve for x
    x = 65,854,465.93/12,326.96
  6. Step 6: Final answer
    x = 5,342.31

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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.