Home / 10,198.80-15,299.28-3,178.92

Finding the Fourth Proportional to 10,198.80, 15,299.28 and 3,178.92

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Solution

The fourth proportional to 10,198.80, 15,299.28 and 3,178.92 is: 4,768.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,198.80 : 15,299.28 = 3,178.92 : x
  2. Step 2: Convert to fraction form
    10,198.80/15,299.28 = 3,178.92/x
  3. Step 3: Cross multiply
    10,198.80x = 15,299.28 × 3,178.92
  4. Step 4: Simplify right side
    10,198.80x = 48,635,187.18
  5. Step 5: Solve for x
    x = 48,635,187.18/10,198.80
  6. Step 6: Final answer
    x = 4,768.72

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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.