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Finding the Fourth Proportional to 12,682.71, 19,025.01 and 3,917.57

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Solution

The fourth proportional to 12,682.71, 19,025.01 and 3,917.57 is: 5,876.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,682.71 : 19,025.01 = 3,917.57 : x
  2. Step 2: Convert to fraction form
    12,682.71/19,025.01 = 3,917.57/x
  3. Step 3: Cross multiply
    12,682.71x = 19,025.01 × 3,917.57
  4. Step 4: Simplify right side
    12,682.71x = 74,531,713.30
  5. Step 5: Solve for x
    x = 74,531,713.30/12,682.71
  6. Step 6: Final answer
    x = 5,876.64

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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.