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Finding the Fourth Proportional to 12,472.87, 18,709.26 and 3,238.87

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Solution

The fourth proportional to 12,472.87, 18,709.26 and 3,238.87 is: 4,858.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.87 : 18,709.26 = 3,238.87 : x
  2. Step 2: Convert to fraction form
    12,472.87/18,709.26 = 3,238.87/x
  3. Step 3: Cross multiply
    12,472.87x = 18,709.26 × 3,238.87
  4. Step 4: Simplify right side
    12,472.87x = 60,596,860.94
  5. Step 5: Solve for x
    x = 60,596,860.94/12,472.87
  6. Step 6: Final answer
    x = 4,858.29

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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.