Home / 20,498.16-30,747.25-15,825

Finding the Fourth Proportional to 20,498.16, 30,747.25 and 15,825

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Solution

The fourth proportional to 20,498.16, 30,747.25 and 15,825 is: 23,737.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.16 : 30,747.25 = 15,825 : x
  2. Step 2: Convert to fraction form
    20,498.16/30,747.25 = 15,825/x
  3. Step 3: Cross multiply
    20,498.16x = 30,747.25 × 15,825
  4. Step 4: Simplify right side
    20,498.16x = 486,575,231.25
  5. Step 5: Solve for x
    x = 486,575,231.25/20,498.16
  6. Step 6: Final answer
    x = 23,737.51

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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.