Home / 11,322.20-16,972.36-3,921.10

Finding the Fourth Proportional to 11,322.20, 16,972.36 and 3,921.10

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Solution

The fourth proportional to 11,322.20, 16,972.36 and 3,921.10 is: 5,877.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,322.20 : 16,972.36 = 3,921.10 : x
  2. Step 2: Convert to fraction form
    11,322.20/16,972.36 = 3,921.10/x
  3. Step 3: Cross multiply
    11,322.20x = 16,972.36 × 3,921.10
  4. Step 4: Simplify right side
    11,322.20x = 66,550,320.80
  5. Step 5: Solve for x
    x = 66,550,320.80/11,322.20
  6. Step 6: Final answer
    x = 5,877.86

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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.