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Finding the Fourth Proportional to 12,692.44, 19,005.87 and 8,755.84

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Solution

The fourth proportional to 12,692.44, 19,005.87 and 8,755.84 is: 13,111.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,692.44 : 19,005.87 = 8,755.84 : x
  2. Step 2: Convert to fraction form
    12,692.44/19,005.87 = 8,755.84/x
  3. Step 3: Cross multiply
    12,692.44x = 19,005.87 × 8,755.84
  4. Step 4: Simplify right side
    12,692.44x = 166,412,356.78
  5. Step 5: Solve for x
    x = 166,412,356.78/12,692.44
  6. Step 6: Final answer
    x = 13,111.14

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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.