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Finding the Fourth Proportional to 21,836.73, 32,754.79 and 12,456.73

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Solution

The fourth proportional to 21,836.73, 32,754.79 and 12,456.73 is: 18,684.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.73 : 32,754.79 = 12,456.73 : x
  2. Step 2: Convert to fraction form
    21,836.73/32,754.79 = 12,456.73/x
  3. Step 3: Cross multiply
    21,836.73x = 32,754.79 × 12,456.73
  4. Step 4: Simplify right side
    21,836.73x = 408,017,575.24
  5. Step 5: Solve for x
    x = 408,017,575.24/21,836.73
  6. Step 6: Final answer
    x = 18,684.92

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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.