Home / 20,606-28,441.20-12,227.36

Finding the Fourth Proportional to 20,606, 28,441.20 and 12,227.36

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Solution

The fourth proportional to 20,606, 28,441.20 and 12,227.36 is: 16,876.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606 : 28,441.20 = 12,227.36 : x
  2. Step 2: Convert to fraction form
    20,606/28,441.20 = 12,227.36/x
  3. Step 3: Cross multiply
    20,606x = 28,441.20 × 12,227.36
  4. Step 4: Simplify right side
    20,606x = 347,760,791.23
  5. Step 5: Solve for x
    x = 347,760,791.23/20,606
  6. Step 6: Final answer
    x = 16,876.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.