Home / 11,191.48-16,786.80-2,871.55

Finding the Fourth Proportional to 11,191.48, 16,786.80 and 2,871.55

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Solution

The fourth proportional to 11,191.48, 16,786.80 and 2,871.55 is: 4,307.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.48 : 16,786.80 = 2,871.55 : x
  2. Step 2: Convert to fraction form
    11,191.48/16,786.80 = 2,871.55/x
  3. Step 3: Cross multiply
    11,191.48x = 16,786.80 × 2,871.55
  4. Step 4: Simplify right side
    11,191.48x = 48,204,135.54
  5. Step 5: Solve for x
    x = 48,204,135.54/11,191.48
  6. Step 6: Final answer
    x = 4,307.22

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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.