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Finding the Fourth Proportional to 19,843.94, 29,772.78 and 13,207.07

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Solution

The fourth proportional to 19,843.94, 29,772.78 and 13,207.07 is: 19,815.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,843.94 : 29,772.78 = 13,207.07 : x
  2. Step 2: Convert to fraction form
    19,843.94/29,772.78 = 13,207.07/x
  3. Step 3: Cross multiply
    19,843.94x = 29,772.78 × 13,207.07
  4. Step 4: Simplify right side
    19,843.94x = 393,211,189.55
  5. Step 5: Solve for x
    x = 393,211,189.55/19,843.94
  6. Step 6: Final answer
    x = 19,815.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.