Home / 21,618.38-29,833.36-11,682.38

Finding the Fourth Proportional to 21,618.38, 29,833.36 and 11,682.38

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Solution

The fourth proportional to 21,618.38, 29,833.36 and 11,682.38 is: 16,121.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,618.38 : 29,833.36 = 11,682.38 : x
  2. Step 2: Convert to fraction form
    21,618.38/29,833.36 = 11,682.38/x
  3. Step 3: Cross multiply
    21,618.38x = 29,833.36 × 11,682.38
  4. Step 4: Simplify right side
    21,618.38x = 348,524,648.20
  5. Step 5: Solve for x
    x = 348,524,648.20/21,618.38
  6. Step 6: Final answer
    x = 16,121.68

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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.