Home / 21,144.43-29,179.25-12,191.85

Finding the Fourth Proportional to 21,144.43, 29,179.25 and 12,191.85

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Solution

The fourth proportional to 21,144.43, 29,179.25 and 12,191.85 is: 16,824.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.43 : 29,179.25 = 12,191.85 : x
  2. Step 2: Convert to fraction form
    21,144.43/29,179.25 = 12,191.85/x
  3. Step 3: Cross multiply
    21,144.43x = 29,179.25 × 12,191.85
  4. Step 4: Simplify right side
    21,144.43x = 355,749,039.11
  5. Step 5: Solve for x
    x = 355,749,039.11/21,144.43
  6. Step 6: Final answer
    x = 16,824.72

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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.