Home / 11,311.71-16,966.80-2,991.54

Finding the Fourth Proportional to 11,311.71, 16,966.80 and 2,991.54

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Solution

The fourth proportional to 11,311.71, 16,966.80 and 2,991.54 is: 4,487.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,311.71 : 16,966.80 = 2,991.54 : x
  2. Step 2: Convert to fraction form
    11,311.71/16,966.80 = 2,991.54/x
  3. Step 3: Cross multiply
    11,311.71x = 16,966.80 × 2,991.54
  4. Step 4: Simplify right side
    11,311.71x = 50,756,829.06
  5. Step 5: Solve for x
    x = 50,756,829.06/11,311.71
  6. Step 6: Final answer
    x = 4,487.11

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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.