Home / 21,620.70-29,833.13-12,187.44

Finding the Fourth Proportional to 21,620.70, 29,833.13 and 12,187.44

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Solution

The fourth proportional to 21,620.70, 29,833.13 and 12,187.44 is: 16,816.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,620.70 : 29,833.13 = 12,187.44 : x
  2. Step 2: Convert to fraction form
    21,620.70/29,833.13 = 12,187.44/x
  3. Step 3: Cross multiply
    21,620.70x = 29,833.13 × 12,187.44
  4. Step 4: Simplify right side
    21,620.70x = 363,589,481.89
  5. Step 5: Solve for x
    x = 363,589,481.89/21,620.70
  6. Step 6: Final answer
    x = 16,816.73

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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.