Home / 20,725.21-31,078.68-5,930.76

Finding the Fourth Proportional to 20,725.21, 31,078.68 and 5,930.76

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Solution

The fourth proportional to 20,725.21, 31,078.68 and 5,930.76 is: 8,893.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.21 : 31,078.68 = 5,930.76 : x
  2. Step 2: Convert to fraction form
    20,725.21/31,078.68 = 5,930.76/x
  3. Step 3: Cross multiply
    20,725.21x = 31,078.68 × 5,930.76
  4. Step 4: Simplify right side
    20,725.21x = 184,320,192.20
  5. Step 5: Solve for x
    x = 184,320,192.20/20,725.21
  6. Step 6: Final answer
    x = 8,893.53

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1.5x scale

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.