Home / 11,272.68-16,916.04-5,429.88

Finding the Fourth Proportional to 11,272.68, 16,916.04 and 5,429.88

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Solution

The fourth proportional to 11,272.68, 16,916.04 and 5,429.88 is: 8,148.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,272.68 : 16,916.04 = 5,429.88 : x
  2. Step 2: Convert to fraction form
    11,272.68/16,916.04 = 5,429.88/x
  3. Step 3: Cross multiply
    11,272.68x = 16,916.04 × 5,429.88
  4. Step 4: Simplify right side
    11,272.68x = 91,852,067.28
  5. Step 5: Solve for x
    x = 91,852,067.28/11,272.68
  6. Step 6: Final answer
    x = 8,148.20

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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.