Home / 19,787.90-29,692.78-11,892.83

Finding the Fourth Proportional to 19,787.90, 29,692.78 and 11,892.83

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Solution

The fourth proportional to 19,787.90, 29,692.78 and 11,892.83 is: 17,845.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,787.90 : 29,692.78 = 11,892.83 : x
  2. Step 2: Convert to fraction form
    19,787.90/29,692.78 = 11,892.83/x
  3. Step 3: Cross multiply
    19,787.90x = 29,692.78 × 11,892.83
  4. Step 4: Simplify right side
    19,787.90x = 353,131,006.57
  5. Step 5: Solve for x
    x = 353,131,006.57/19,787.90
  6. Step 6: Final answer
    x = 17,845.81

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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.