Home / 20,804.22-31,243.92-19,135.34

Finding the Fourth Proportional to 20,804.22, 31,243.92 and 19,135.34

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Solution

The fourth proportional to 20,804.22, 31,243.92 and 19,135.34 is: 28,737.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.22 : 31,243.92 = 19,135.34 : x
  2. Step 2: Convert to fraction form
    20,804.22/31,243.92 = 19,135.34/x
  3. Step 3: Cross multiply
    20,804.22x = 31,243.92 × 19,135.34
  4. Step 4: Simplify right side
    20,804.22x = 597,862,921.32
  5. Step 5: Solve for x
    x = 597,862,921.32/20,804.22
  6. Step 6: Final answer
    x = 28,737.58

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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.