Home / 11,299.20-16,948.80-2,979.20

Finding the Fourth Proportional to 11,299.20, 16,948.80 and 2,979.20

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Solution

The fourth proportional to 11,299.20, 16,948.80 and 2,979.20 is: 4,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,299.20 : 16,948.80 = 2,979.20 : x
  2. Step 2: Convert to fraction form
    11,299.20/16,948.80 = 2,979.20/x
  3. Step 3: Cross multiply
    11,299.20x = 16,948.80 × 2,979.20
  4. Step 4: Simplify right side
    11,299.20x = 50,493,864.96
  5. Step 5: Solve for x
    x = 50,493,864.96/11,299.20
  6. Step 6: Final answer
    x = 4,468.80

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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.