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Finding the Fourth Proportional to 13,722.74, 20,616.94 and 8,801.99

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Solution

The fourth proportional to 13,722.74, 20,616.94 and 8,801.99 is: 13,224.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.74 : 20,616.94 = 8,801.99 : x
  2. Step 2: Convert to fraction form
    13,722.74/20,616.94 = 8,801.99/x
  3. Step 3: Cross multiply
    13,722.74x = 20,616.94 × 8,801.99
  4. Step 4: Simplify right side
    13,722.74x = 181,469,996.63
  5. Step 5: Solve for x
    x = 181,469,996.63/13,722.74
  6. Step 6: Final answer
    x = 13,224.04

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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.