Home / 21,684.46-29,921.25-12,249.58

Finding the Fourth Proportional to 21,684.46, 29,921.25 and 12,249.58

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Solution

The fourth proportional to 21,684.46, 29,921.25 and 12,249.58 is: 16,902.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,684.46 : 29,921.25 = 12,249.58 : x
  2. Step 2: Convert to fraction form
    21,684.46/29,921.25 = 12,249.58/x
  3. Step 3: Cross multiply
    21,684.46x = 29,921.25 × 12,249.58
  4. Step 4: Simplify right side
    21,684.46x = 366,522,745.58
  5. Step 5: Solve for x
    x = 366,522,745.58/21,684.46
  6. Step 6: Final answer
    x = 16,902.55

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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.