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Finding the Fourth Proportional to 15,198.75, 20,974.14 and 8,483.94

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Solution

The fourth proportional to 15,198.75, 20,974.14 and 8,483.94 is: 11,707.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,198.75 : 20,974.14 = 8,483.94 : x
  2. Step 2: Convert to fraction form
    15,198.75/20,974.14 = 8,483.94/x
  3. Step 3: Cross multiply
    15,198.75x = 20,974.14 × 8,483.94
  4. Step 4: Simplify right side
    15,198.75x = 177,943,345.31
  5. Step 5: Solve for x
    x = 177,943,345.31/15,198.75
  6. Step 6: Final answer
    x = 11,707.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.