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Finding the Fourth Proportional to 13,957.73, 20,939.67 and 7,726.83

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Solution

The fourth proportional to 13,957.73, 20,939.67 and 7,726.83 is: 11,591.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,957.73 : 20,939.67 = 7,726.83 : x
  2. Step 2: Convert to fraction form
    13,957.73/20,939.67 = 7,726.83/x
  3. Step 3: Cross multiply
    13,957.73x = 20,939.67 × 7,726.83
  4. Step 4: Simplify right side
    13,957.73x = 161,797,270.35
  5. Step 5: Solve for x
    x = 161,797,270.35/13,957.73
  6. Step 6: Final answer
    x = 11,591.95

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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.