Home / 12,857.92-19,286.68-4,092.76

Finding the Fourth Proportional to 12,857.92, 19,286.68 and 4,092.76

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Solution

The fourth proportional to 12,857.92, 19,286.68 and 4,092.76 is: 6,139.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.92 : 19,286.68 = 4,092.76 : x
  2. Step 2: Convert to fraction form
    12,857.92/19,286.68 = 4,092.76/x
  3. Step 3: Cross multiply
    12,857.92x = 19,286.68 × 4,092.76
  4. Step 4: Simplify right side
    12,857.92x = 78,935,752.44
  5. Step 5: Solve for x
    x = 78,935,752.44/12,857.92
  6. Step 6: Final answer
    x = 6,139.08

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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.