Home / 20,725.09-31,078.49-5,930.64

Finding the Fourth Proportional to 20,725.09, 31,078.49 and 5,930.64

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Solution

The fourth proportional to 20,725.09, 31,078.49 and 5,930.64 is: 8,893.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.09 : 31,078.49 = 5,930.64 : x
  2. Step 2: Convert to fraction form
    20,725.09/31,078.49 = 5,930.64/x
  3. Step 3: Cross multiply
    20,725.09x = 31,078.49 × 5,930.64
  4. Step 4: Simplify right side
    20,725.09x = 184,315,335.93
  5. Step 5: Solve for x
    x = 184,315,335.93/20,725.09
  6. Step 6: Final answer
    x = 8,893.34

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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.