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Finding the Fourth Proportional to 12,425.08, 18,637.64 and 3,659.89

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Solution

The fourth proportional to 12,425.08, 18,637.64 and 3,659.89 is: 5,489.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.08 : 18,637.64 = 3,659.89 : x
  2. Step 2: Convert to fraction form
    12,425.08/18,637.64 = 3,659.89/x
  3. Step 3: Cross multiply
    12,425.08x = 18,637.64 × 3,659.89
  4. Step 4: Simplify right side
    12,425.08x = 68,211,600.77
  5. Step 5: Solve for x
    x = 68,211,600.77/12,425.08
  6. Step 6: Final answer
    x = 5,489.83

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.