Home / 20,512.20-28,310.76-12,016.20

Finding the Fourth Proportional to 20,512.20, 28,310.76 and 12,016.20

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Solution

The fourth proportional to 20,512.20, 28,310.76 and 12,016.20 is: 16,584.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.20 : 28,310.76 = 12,016.20 : x
  2. Step 2: Convert to fraction form
    20,512.20/28,310.76 = 12,016.20/x
  3. Step 3: Cross multiply
    20,512.20x = 28,310.76 × 12,016.20
  4. Step 4: Simplify right side
    20,512.20x = 340,187,754.31
  5. Step 5: Solve for x
    x = 340,187,754.31/20,512.20
  6. Step 6: Final answer
    x = 16,584.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.