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Finding the Fourth Proportional to 19,694.80, 27,188.02 and 12,625.26

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Solution

The fourth proportional to 19,694.80, 27,188.02 and 12,625.26 is: 17,428.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,694.80 : 27,188.02 = 12,625.26 : x
  2. Step 2: Convert to fraction form
    19,694.80/27,188.02 = 12,625.26/x
  3. Step 3: Cross multiply
    19,694.80x = 27,188.02 × 12,625.26
  4. Step 4: Simplify right side
    19,694.80x = 343,255,821.39
  5. Step 5: Solve for x
    x = 343,255,821.39/19,694.80
  6. Step 6: Final answer
    x = 17,428.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.