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Finding the Fourth Proportional to 12,692.96, 19,039.43 and 3,458.96

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Solution

The fourth proportional to 12,692.96, 19,039.43 and 3,458.96 is: 5,188.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,692.96 : 19,039.43 = 3,458.96 : x
  2. Step 2: Convert to fraction form
    12,692.96/19,039.43 = 3,458.96/x
  3. Step 3: Cross multiply
    12,692.96x = 19,039.43 × 3,458.96
  4. Step 4: Simplify right side
    12,692.96x = 65,856,626.79
  5. Step 5: Solve for x
    x = 65,856,626.79/12,692.96
  6. Step 6: Final answer
    x = 5,188.44

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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.