Home / 20,768.23-28,662.15-11,817.73

Finding the Fourth Proportional to 20,768.23, 28,662.15 and 11,817.73

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Solution

The fourth proportional to 20,768.23, 28,662.15 and 11,817.73 is: 16,309.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.23 : 28,662.15 = 11,817.73 : x
  2. Step 2: Convert to fraction form
    20,768.23/28,662.15 = 11,817.73/x
  3. Step 3: Cross multiply
    20,768.23x = 28,662.15 × 11,817.73
  4. Step 4: Simplify right side
    20,768.23x = 338,721,549.92
  5. Step 5: Solve for x
    x = 338,721,549.92/20,768.23
  6. Step 6: Final answer
    x = 16,309.60

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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.