Home / 12,767.76-19,142.40-3,997.92

Finding the Fourth Proportional to 12,767.76, 19,142.40 and 3,997.92

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Solution

The fourth proportional to 12,767.76, 19,142.40 and 3,997.92 is: 5,993.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,767.76 : 19,142.40 = 3,997.92 : x
  2. Step 2: Convert to fraction form
    12,767.76/19,142.40 = 3,997.92/x
  3. Step 3: Cross multiply
    12,767.76x = 19,142.40 × 3,997.92
  4. Step 4: Simplify right side
    12,767.76x = 76,529,783.81
  5. Step 5: Solve for x
    x = 76,529,783.81/12,767.76
  6. Step 6: Final answer
    x = 5,993.99

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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.