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Finding the Fourth Proportional to 12,692.87, 19,050.86 and 6,774.78

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Solution

The fourth proportional to 12,692.87, 19,050.86 and 6,774.78 is: 10,168.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,692.87 : 19,050.86 = 6,774.78 : x
  2. Step 2: Convert to fraction form
    12,692.87/19,050.86 = 6,774.78/x
  3. Step 3: Cross multiply
    12,692.87x = 19,050.86 × 6,774.78
  4. Step 4: Simplify right side
    12,692.87x = 129,065,351.44
  5. Step 5: Solve for x
    x = 129,065,351.44/12,692.87
  6. Step 6: Final answer
    x = 10,168.33

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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.