Home / 20,414.20-30,578.10-16,007.80

Finding the Fourth Proportional to 20,414.20, 30,578.10 and 16,007.80

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Solution

The fourth proportional to 20,414.20, 30,578.10 and 16,007.80 is: 23,977.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.20 : 30,578.10 = 16,007.80 : x
  2. Step 2: Convert to fraction form
    20,414.20/30,578.10 = 16,007.80/x
  3. Step 3: Cross multiply
    20,414.20x = 30,578.10 × 16,007.80
  4. Step 4: Simplify right side
    20,414.20x = 489,488,109.18
  5. Step 5: Solve for x
    x = 489,488,109.18/20,414.20
  6. Step 6: Final answer
    x = 23,977.82

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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.