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Finding the Fourth Proportional to 18,692.76, 27,998.94 and 8,817.24

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Solution

The fourth proportional to 18,692.76, 27,998.94 and 8,817.24 is: 13,206.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692.76 : 27,998.94 = 8,817.24 : x
  2. Step 2: Convert to fraction form
    18,692.76/27,998.94 = 8,817.24/x
  3. Step 3: Cross multiply
    18,692.76x = 27,998.94 × 8,817.24
  4. Step 4: Simplify right side
    18,692.76x = 246,873,373.73
  5. Step 5: Solve for x
    x = 246,873,373.73/18,692.76
  6. Step 6: Final answer
    x = 13,206.90

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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.