Home / 12,481.35-18,719.98-4,161.43

Finding the Fourth Proportional to 12,481.35, 18,719.98 and 4,161.43

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Solution

The fourth proportional to 12,481.35, 18,719.98 and 4,161.43 is: 6,241.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.35 : 18,719.98 = 4,161.43 : x
  2. Step 2: Convert to fraction form
    12,481.35/18,719.98 = 4,161.43/x
  3. Step 3: Cross multiply
    12,481.35x = 18,719.98 × 4,161.43
  4. Step 4: Simplify right side
    12,481.35x = 77,901,896.77
  5. Step 5: Solve for x
    x = 77,901,896.77/12,481.35
  6. Step 6: Final answer
    x = 6,241.47

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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.