Home / 21,138.05-29,104.12-17,944.73

Finding the Fourth Proportional to 21,138.05, 29,104.12 and 17,944.73

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Solution

The fourth proportional to 21,138.05, 29,104.12 and 17,944.73 is: 24,707.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,138.05 : 29,104.12 = 17,944.73 : x
  2. Step 2: Convert to fraction form
    21,138.05/29,104.12 = 17,944.73/x
  3. Step 3: Cross multiply
    21,138.05x = 29,104.12 × 17,944.73
  4. Step 4: Simplify right side
    21,138.05x = 522,265,575.29
  5. Step 5: Solve for x
    x = 522,265,575.29/21,138.05
  6. Step 6: Final answer
    x = 24,707.37

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Similar ratio
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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.