Home / 20,976.71-31,469.31-6,937.79

Finding the Fourth Proportional to 20,976.71, 31,469.31 and 6,937.79

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Solution

The fourth proportional to 20,976.71, 31,469.31 and 6,937.79 is: 10,408.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.71 : 31,469.31 = 6,937.79 : x
  2. Step 2: Convert to fraction form
    20,976.71/31,469.31 = 6,937.79/x
  3. Step 3: Cross multiply
    20,976.71x = 31,469.31 × 6,937.79
  4. Step 4: Simplify right side
    20,976.71x = 218,327,306.88
  5. Step 5: Solve for x
    x = 218,327,306.88/20,976.71
  6. Step 6: Final answer
    x = 10,408.08

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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.