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Finding the Fourth Proportional to 19,696.48, 27,174.28 and 12,626.80

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Solution

The fourth proportional to 19,696.48, 27,174.28 and 12,626.80 is: 17,420.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,696.48 : 27,174.28 = 12,626.80 : x
  2. Step 2: Convert to fraction form
    19,696.48/27,174.28 = 12,626.80/x
  3. Step 3: Cross multiply
    19,696.48x = 27,174.28 × 12,626.80
  4. Step 4: Simplify right side
    19,696.48x = 343,124,198.70
  5. Step 5: Solve for x
    x = 343,124,198.70/19,696.48
  6. Step 6: Final answer
    x = 17,420.58

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