Home / 18,845.82-25,998.71-12,129.03

Finding the Fourth Proportional to 18,845.82, 25,998.71 and 12,129.03

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Solution

The fourth proportional to 18,845.82, 25,998.71 and 12,129.03 is: 16,732.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,845.82 : 25,998.71 = 12,129.03 : x
  2. Step 2: Convert to fraction form
    18,845.82/25,998.71 = 12,129.03/x
  3. Step 3: Cross multiply
    18,845.82x = 25,998.71 × 12,129.03
  4. Step 4: Simplify right side
    18,845.82x = 315,339,072.91
  5. Step 5: Solve for x
    x = 315,339,072.91/18,845.82
  6. Step 6: Final answer
    x = 16,732.57

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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.