Home / 12,728.72-19,092.96-5,230.88

Finding the Fourth Proportional to 12,728.72, 19,092.96 and 5,230.88

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Solution

The fourth proportional to 12,728.72, 19,092.96 and 5,230.88 is: 7,846.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.72 : 19,092.96 = 5,230.88 : x
  2. Step 2: Convert to fraction form
    12,728.72/19,092.96 = 5,230.88/x
  3. Step 3: Cross multiply
    12,728.72x = 19,092.96 × 5,230.88
  4. Step 4: Simplify right side
    12,728.72x = 99,872,982.60
  5. Step 5: Solve for x
    x = 99,872,982.60/12,728.72
  6. Step 6: Final answer
    x = 7,846.27

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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.