Home / 16,818.20-25,251.60-12,687.20

Finding the Fourth Proportional to 16,818.20, 25,251.60 and 12,687.20

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Solution

The fourth proportional to 16,818.20, 25,251.60 and 12,687.20 is: 19,049.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,818.20 : 25,251.60 = 12,687.20 : x
  2. Step 2: Convert to fraction form
    16,818.20/25,251.60 = 12,687.20/x
  3. Step 3: Cross multiply
    16,818.20x = 25,251.60 × 12,687.20
  4. Step 4: Simplify right side
    16,818.20x = 320,372,099.52
  5. Step 5: Solve for x
    x = 320,372,099.52/16,818.20
  6. Step 6: Final answer
    x = 19,049.13

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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.