Home / 20,829.22-31,243.83-5,248.06

Finding the Fourth Proportional to 20,829.22, 31,243.83 and 5,248.06

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Solution

The fourth proportional to 20,829.22, 31,243.83 and 5,248.06 is: 7,872.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.22 : 31,243.83 = 5,248.06 : x
  2. Step 2: Convert to fraction form
    20,829.22/31,243.83 = 5,248.06/x
  3. Step 3: Cross multiply
    20,829.22x = 31,243.83 × 5,248.06
  4. Step 4: Simplify right side
    20,829.22x = 163,969,494.47
  5. Step 5: Solve for x
    x = 163,969,494.47/20,829.22
  6. Step 6: Final answer
    x = 7,872.09

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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.