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Finding the Fourth Proportional to 13,982.64, 19,295.64 and 7,694.88

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Solution

The fourth proportional to 13,982.64, 19,295.64 and 7,694.88 is: 10,618.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.64 : 19,295.64 = 7,694.88 : x
  2. Step 2: Convert to fraction form
    13,982.64/19,295.64 = 7,694.88/x
  3. Step 3: Cross multiply
    13,982.64x = 19,295.64 × 7,694.88
  4. Step 4: Simplify right side
    13,982.64x = 148,477,634.32
  5. Step 5: Solve for x
    x = 148,477,634.32/13,982.64
  6. Step 6: Final answer
    x = 10,618.71

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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.