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Finding the Fourth Proportional to 11,855.58, 16,360.90 and 6,550.40

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Solution

The fourth proportional to 11,855.58, 16,360.90 and 6,550.40 is: 9,039.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,855.58 : 16,360.90 = 6,550.40 : x
  2. Step 2: Convert to fraction form
    11,855.58/16,360.90 = 6,550.40/x
  3. Step 3: Cross multiply
    11,855.58x = 16,360.90 × 6,550.40
  4. Step 4: Simplify right side
    11,855.58x = 107,170,439.36
  5. Step 5: Solve for x
    x = 107,170,439.36/11,855.58
  6. Step 6: Final answer
    x = 9,039.66

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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.