Home / 20,451.69-30,617.82-15,540.66

Finding the Fourth Proportional to 20,451.69, 30,617.82 and 15,540.66

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Solution

The fourth proportional to 20,451.69, 30,617.82 and 15,540.66 is: 23,265.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.69 : 30,617.82 = 15,540.66 : x
  2. Step 2: Convert to fraction form
    20,451.69/30,617.82 = 15,540.66/x
  3. Step 3: Cross multiply
    20,451.69x = 30,617.82 × 15,540.66
  4. Step 4: Simplify right side
    20,451.69x = 475,821,130.56
  5. Step 5: Solve for x
    x = 475,821,130.56/20,451.69
  6. Step 6: Final answer
    x = 23,265.61

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1.5x scale

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.