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Finding the Fourth Proportional to 19,906.94, 29,859.41 and 7,425.99

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Solution

The fourth proportional to 19,906.94, 29,859.41 and 7,425.99 is: 11,138.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,906.94 : 29,859.41 = 7,425.99 : x
  2. Step 2: Convert to fraction form
    19,906.94/29,859.41 = 7,425.99/x
  3. Step 3: Cross multiply
    19,906.94x = 29,859.41 × 7,425.99
  4. Step 4: Simplify right side
    19,906.94x = 221,735,586.66
  5. Step 5: Solve for x
    x = 221,735,586.66/19,906.94
  6. Step 6: Final answer
    x = 11,138.61

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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.