Home / 15,198.84-20,974.62-8,911.32

Finding the Fourth Proportional to 15,198.84, 20,974.62 and 8,911.32

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Solution

The fourth proportional to 15,198.84, 20,974.62 and 8,911.32 is: 12,297.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,198.84 : 20,974.62 = 8,911.32 : x
  2. Step 2: Convert to fraction form
    15,198.84/20,974.62 = 8,911.32/x
  3. Step 3: Cross multiply
    15,198.84x = 20,974.62 × 8,911.32
  4. Step 4: Simplify right side
    15,198.84x = 186,911,550.70
  5. Step 5: Solve for x
    x = 186,911,550.70/15,198.84
  6. Step 6: Final answer
    x = 12,297.75

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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.