Home / 11,815.78-17,721.24-5,573.11

Finding the Fourth Proportional to 11,815.78, 17,721.24 and 5,573.11

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Solution

The fourth proportional to 11,815.78, 17,721.24 and 5,573.11 is: 8,358.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.78 : 17,721.24 = 5,573.11 : x
  2. Step 2: Convert to fraction form
    11,815.78/17,721.24 = 5,573.11/x
  3. Step 3: Cross multiply
    11,815.78x = 17,721.24 × 5,573.11
  4. Step 4: Simplify right side
    11,815.78x = 98,762,419.86
  5. Step 5: Solve for x
    x = 98,762,419.86/11,815.78
  6. Step 6: Final answer
    x = 8,358.52

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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.