Home / 12,687.74-19,028.83-4,255.43

Finding the Fourth Proportional to 12,687.74, 19,028.83 and 4,255.43

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Solution

The fourth proportional to 12,687.74, 19,028.83 and 4,255.43 is: 6,382.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.74 : 19,028.83 = 4,255.43 : x
  2. Step 2: Convert to fraction form
    12,687.74/19,028.83 = 4,255.43/x
  3. Step 3: Cross multiply
    12,687.74x = 19,028.83 × 4,255.43
  4. Step 4: Simplify right side
    12,687.74x = 80,975,832.77
  5. Step 5: Solve for x
    x = 80,975,832.77/12,687.74
  6. Step 6: Final answer
    x = 6,382.21

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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.