Home / 12,728.43-19,086.45-4,408.92

Finding the Fourth Proportional to 12,728.43, 19,086.45 and 4,408.92

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Solution

The fourth proportional to 12,728.43, 19,086.45 and 4,408.92 is: 6,611.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.43 : 19,086.45 = 4,408.92 : x
  2. Step 2: Convert to fraction form
    12,728.43/19,086.45 = 4,408.92/x
  3. Step 3: Cross multiply
    12,728.43x = 19,086.45 × 4,408.92
  4. Step 4: Simplify right side
    12,728.43x = 84,150,631.13
  5. Step 5: Solve for x
    x = 84,150,631.13/12,728.43
  6. Step 6: Final answer
    x = 6,611.23

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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.