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Finding the Fourth Proportional to 13,706.73, 20,553.05 and 6,687.05

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Solution

The fourth proportional to 13,706.73, 20,553.05 and 6,687.05 is: 10,027.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,706.73 : 20,553.05 = 6,687.05 : x
  2. Step 2: Convert to fraction form
    13,706.73/20,553.05 = 6,687.05/x
  3. Step 3: Cross multiply
    13,706.73x = 20,553.05 × 6,687.05
  4. Step 4: Simplify right side
    13,706.73x = 137,439,186.95
  5. Step 5: Solve for x
    x = 137,439,186.95/13,706.73
  6. Step 6: Final answer
    x = 10,027.13

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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.