Home / 25,910.56-38,876-20,959.20

Finding the Fourth Proportional to 25,910.56, 38,876 and 20,959.20

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Solution

The fourth proportional to 25,910.56, 38,876 and 20,959.20 is: 31,447.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,910.56 : 38,876 = 20,959.20 : x
  2. Step 2: Convert to fraction form
    25,910.56/38,876 = 20,959.20/x
  3. Step 3: Cross multiply
    25,910.56x = 38,876 × 20,959.20
  4. Step 4: Simplify right side
    25,910.56x = 814,809,859.20
  5. Step 5: Solve for x
    x = 814,809,859.20/25,910.56
  6. Step 6: Final answer
    x = 31,447.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.