Home / 12,772.28-19,142.16-5,744.78

Finding the Fourth Proportional to 12,772.28, 19,142.16 and 5,744.78

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Solution

The fourth proportional to 12,772.28, 19,142.16 and 5,744.78 is: 8,609.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,772.28 : 19,142.16 = 5,744.78 : x
  2. Step 2: Convert to fraction form
    12,772.28/19,142.16 = 5,744.78/x
  3. Step 3: Cross multiply
    12,772.28x = 19,142.16 × 5,744.78
  4. Step 4: Simplify right side
    12,772.28x = 109,967,497.92
  5. Step 5: Solve for x
    x = 109,967,497.92/12,772.28
  6. Step 6: Final answer
    x = 8,609.86

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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.