Home / 18,822.56-28,198.20-12,563.70

Finding the Fourth Proportional to 18,822.56, 28,198.20 and 12,563.70

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Solution

The fourth proportional to 18,822.56, 28,198.20 and 12,563.70 is: 18,821.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.56 : 28,198.20 = 12,563.70 : x
  2. Step 2: Convert to fraction form
    18,822.56/28,198.20 = 12,563.70/x
  3. Step 3: Cross multiply
    18,822.56x = 28,198.20 × 12,563.70
  4. Step 4: Simplify right side
    18,822.56x = 354,273,725.34
  5. Step 5: Solve for x
    x = 354,273,725.34/18,822.56
  6. Step 6: Final answer
    x = 18,821.76

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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.