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Finding the Fourth Proportional to 11,777.78, 17,659.10 and 5,529.44

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Solution

The fourth proportional to 11,777.78, 17,659.10 and 5,529.44 is: 8,290.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,777.78 : 17,659.10 = 5,529.44 : x
  2. Step 2: Convert to fraction form
    11,777.78/17,659.10 = 5,529.44/x
  3. Step 3: Cross multiply
    11,777.78x = 17,659.10 × 5,529.44
  4. Step 4: Simplify right side
    11,777.78x = 97,644,933.90
  5. Step 5: Solve for x
    x = 97,644,933.90/11,777.78
  6. Step 6: Final answer
    x = 8,290.61

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1.5x scale

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.