Home / 12,422.88-18,634.32-3,657.87

Finding the Fourth Proportional to 12,422.88, 18,634.32 and 3,657.87

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Solution

The fourth proportional to 12,422.88, 18,634.32 and 3,657.87 is: 5,486.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.88 : 18,634.32 = 3,657.87 : x
  2. Step 2: Convert to fraction form
    12,422.88/18,634.32 = 3,657.87/x
  3. Step 3: Cross multiply
    12,422.88x = 18,634.32 × 3,657.87
  4. Step 4: Simplify right side
    12,422.88x = 68,161,920.10
  5. Step 5: Solve for x
    x = 68,161,920.10/12,422.88
  6. Step 6: Final answer
    x = 5,486.81

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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.