Home / 19,692.20-29,511.30-12,650.60

Finding the Fourth Proportional to 19,692.20, 29,511.30 and 12,650.60

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Solution

The fourth proportional to 19,692.20, 29,511.30 and 12,650.60 is: 18,958.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,692.20 : 29,511.30 = 12,650.60 : x
  2. Step 2: Convert to fraction form
    19,692.20/29,511.30 = 12,650.60/x
  3. Step 3: Cross multiply
    19,692.20x = 29,511.30 × 12,650.60
  4. Step 4: Simplify right side
    19,692.20x = 373,335,651.78
  5. Step 5: Solve for x
    x = 373,335,651.78/19,692.20
  6. Step 6: Final answer
    x = 18,958.55

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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.