Home / 12,728.20-19,092.30-6,896.20

Finding the Fourth Proportional to 12,728.20, 19,092.30 and 6,896.20

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Solution

The fourth proportional to 12,728.20, 19,092.30 and 6,896.20 is: 10,344.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.20 : 19,092.30 = 6,896.20 : x
  2. Step 2: Convert to fraction form
    12,728.20/19,092.30 = 6,896.20/x
  3. Step 3: Cross multiply
    12,728.20x = 19,092.30 × 6,896.20
  4. Step 4: Simplify right side
    12,728.20x = 131,664,319.26
  5. Step 5: Solve for x
    x = 131,664,319.26/12,728.20
  6. Step 6: Final answer
    x = 10,344.30

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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.