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Finding the Fourth Proportional to 18,241.50, 25,163.55 and 12,262.89

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Solution

The fourth proportional to 18,241.50, 25,163.55 and 12,262.89 is: 16,916.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,241.50 : 25,163.55 = 12,262.89 : x
  2. Step 2: Convert to fraction form
    18,241.50/25,163.55 = 12,262.89/x
  3. Step 3: Cross multiply
    18,241.50x = 25,163.55 × 12,262.89
  4. Step 4: Simplify right side
    18,241.50x = 308,577,845.66
  5. Step 5: Solve for x
    x = 308,577,845.66/18,241.50
  6. Step 6: Final answer
    x = 16,916.25

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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.