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Finding the Fourth Proportional to 11,855.88, 16,360.32 and 6,550.64

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Solution

The fourth proportional to 11,855.88, 16,360.32 and 6,550.64 is: 9,039.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,855.88 : 16,360.32 = 6,550.64 : x
  2. Step 2: Convert to fraction form
    11,855.88/16,360.32 = 6,550.64/x
  3. Step 3: Cross multiply
    11,855.88x = 16,360.32 × 6,550.64
  4. Step 4: Simplify right side
    11,855.88x = 107,170,566.60
  5. Step 5: Solve for x
    x = 107,170,566.60/11,855.88
  6. Step 6: Final answer
    x = 9,039.44

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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.