Home / 21,171.97-29,218.49-11,740.33

Finding the Fourth Proportional to 21,171.97, 29,218.49 and 11,740.33

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Solution

The fourth proportional to 21,171.97, 29,218.49 and 11,740.33 is: 16,202.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.97 : 29,218.49 = 11,740.33 : x
  2. Step 2: Convert to fraction form
    21,171.97/29,218.49 = 11,740.33/x
  3. Step 3: Cross multiply
    21,171.97x = 29,218.49 × 11,740.33
  4. Step 4: Simplify right side
    21,171.97x = 343,034,714.70
  5. Step 5: Solve for x
    x = 343,034,714.70/21,171.97
  6. Step 6: Final answer
    x = 16,202.30

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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.