Home / 20,511.41-30,767.77-6,471.56

Finding the Fourth Proportional to 20,511.41, 30,767.77 and 6,471.56

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Solution

The fourth proportional to 20,511.41, 30,767.77 and 6,471.56 is: 9,707.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.41 : 30,767.77 = 6,471.56 : x
  2. Step 2: Convert to fraction form
    20,511.41/30,767.77 = 6,471.56/x
  3. Step 3: Cross multiply
    20,511.41x = 30,767.77 × 6,471.56
  4. Step 4: Simplify right side
    20,511.41x = 199,115,469.62
  5. Step 5: Solve for x
    x = 199,115,469.62/20,511.41
  6. Step 6: Final answer
    x = 9,707.55

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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.