Home / 19,692.70-29,531.28-8,591.78

Finding the Fourth Proportional to 19,692.70, 29,531.28 and 8,591.78

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Solution

The fourth proportional to 19,692.70, 29,531.28 and 8,591.78 is: 12,884.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,692.70 : 29,531.28 = 8,591.78 : x
  2. Step 2: Convert to fraction form
    19,692.70/29,531.28 = 8,591.78/x
  3. Step 3: Cross multiply
    19,692.70x = 29,531.28 × 8,591.78
  4. Step 4: Simplify right side
    19,692.70x = 253,726,260.88
  5. Step 5: Solve for x
    x = 253,726,260.88/19,692.70
  6. Step 6: Final answer
    x = 12,884.28

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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.