Home / 20,924.28-31,383.12-6,129.72

Finding the Fourth Proportional to 20,924.28, 31,383.12 and 6,129.72

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Solution

The fourth proportional to 20,924.28, 31,383.12 and 6,129.72 is: 9,193.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.28 : 31,383.12 = 6,129.72 : x
  2. Step 2: Convert to fraction form
    20,924.28/31,383.12 = 6,129.72/x
  3. Step 3: Cross multiply
    20,924.28x = 31,383.12 × 6,129.72
  4. Step 4: Simplify right side
    20,924.28x = 192,369,738.33
  5. Step 5: Solve for x
    x = 192,369,738.33/20,924.28
  6. Step 6: Final answer
    x = 9,193.61

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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.