Home / 21,832.38-30,135.11-18,879.93

Finding the Fourth Proportional to 21,832.38, 30,135.11 and 18,879.93

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Solution

The fourth proportional to 21,832.38, 30,135.11 and 18,879.93 is: 26,059.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,832.38 : 30,135.11 = 18,879.93 : x
  2. Step 2: Convert to fraction form
    21,832.38/30,135.11 = 18,879.93/x
  3. Step 3: Cross multiply
    21,832.38x = 30,135.11 × 18,879.93
  4. Step 4: Simplify right side
    21,832.38x = 568,948,672.94
  5. Step 5: Solve for x
    x = 568,948,672.94/21,832.38
  6. Step 6: Final answer
    x = 26,059.86

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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.