Home / 11,077.60-16,621.20-5,231.20

Finding the Fourth Proportional to 11,077.60, 16,621.20 and 5,231.20

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Solution

The fourth proportional to 11,077.60, 16,621.20 and 5,231.20 is: 7,849.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,077.60 : 16,621.20 = 5,231.20 : x
  2. Step 2: Convert to fraction form
    11,077.60/16,621.20 = 5,231.20/x
  3. Step 3: Cross multiply
    11,077.60x = 16,621.20 × 5,231.20
  4. Step 4: Simplify right side
    11,077.60x = 86,948,821.44
  5. Step 5: Solve for x
    x = 86,948,821.44/11,077.60
  6. Step 6: Final answer
    x = 7,849.07

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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.