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Finding the Fourth Proportional to 10,900.44, 15,057.90 and 8,813.88

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Solution

The fourth proportional to 10,900.44, 15,057.90 and 8,813.88 is: 12,175.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.44 : 15,057.90 = 8,813.88 : x
  2. Step 2: Convert to fraction form
    10,900.44/15,057.90 = 8,813.88/x
  3. Step 3: Cross multiply
    10,900.44x = 15,057.90 × 8,813.88
  4. Step 4: Simplify right side
    10,900.44x = 132,718,523.65
  5. Step 5: Solve for x
    x = 132,718,523.65/10,900.44
  6. Step 6: Final answer
    x = 12,175.52

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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.