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Finding the Fourth Proportional to 11,008.80, 15,451.20 and 11,008.80

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Solution

The fourth proportional to 11,008.80, 15,451.20 and 11,008.80 is: 15,451.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,008.80 : 15,451.20 = 11,008.80 : x
  2. Step 2: Convert to fraction form
    11,008.80/15,451.20 = 11,008.80/x
  3. Step 3: Cross multiply
    11,008.80x = 15,451.20 × 11,008.80
  4. Step 4: Simplify right side
    11,008.80x = 170,099,170.56
  5. Step 5: Solve for x
    x = 170,099,170.56/11,008.80
  6. Step 6: Final answer
    x = 15,451.20

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.