Home / 21,171.38-29,217.41-11,739.94

Finding the Fourth Proportional to 21,171.38, 29,217.41 and 11,739.94

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Solution

The fourth proportional to 21,171.38, 29,217.41 and 11,739.94 is: 16,201.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.38 : 29,217.41 = 11,739.94 : x
  2. Step 2: Convert to fraction form
    21,171.38/29,217.41 = 11,739.94/x
  3. Step 3: Cross multiply
    21,171.38x = 29,217.41 × 11,739.94
  4. Step 4: Simplify right side
    21,171.38x = 343,010,552.64
  5. Step 5: Solve for x
    x = 343,010,552.64/21,171.38
  6. Step 6: Final answer
    x = 16,201.62

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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.