Home / 11,115.68-16,662.56-4,543.80

Finding the Fourth Proportional to 11,115.68, 16,662.56 and 4,543.80

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Solution

The fourth proportional to 11,115.68, 16,662.56 and 4,543.80 is: 6,811.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.68 : 16,662.56 = 4,543.80 : x
  2. Step 2: Convert to fraction form
    11,115.68/16,662.56 = 4,543.80/x
  3. Step 3: Cross multiply
    11,115.68x = 16,662.56 × 4,543.80
  4. Step 4: Simplify right side
    11,115.68x = 75,711,340.13
  5. Step 5: Solve for x
    x = 75,711,340.13/11,115.68
  6. Step 6: Final answer
    x = 6,811.22

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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.