Home / 10,198.74-15,288.30-5,578.50

Finding the Fourth Proportional to 10,198.74, 15,288.30 and 5,578.50

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Solution

The fourth proportional to 10,198.74, 15,288.30 and 5,578.50 is: 8,362.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,198.74 : 15,288.30 = 5,578.50 : x
  2. Step 2: Convert to fraction form
    10,198.74/15,288.30 = 5,578.50/x
  3. Step 3: Cross multiply
    10,198.74x = 15,288.30 × 5,578.50
  4. Step 4: Simplify right side
    10,198.74x = 85,285,781.55
  5. Step 5: Solve for x
    x = 85,285,781.55/10,198.74
  6. Step 6: Final answer
    x = 8,362.38

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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.