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Finding the Fourth Proportional to 12,620.43, 17,415.57 and 7,316.97

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Solution

The fourth proportional to 12,620.43, 17,415.57 and 7,316.97 is: 10,097.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.43 : 17,415.57 = 7,316.97 : x
  2. Step 2: Convert to fraction form
    12,620.43/17,415.57 = 7,316.97/x
  3. Step 3: Cross multiply
    12,620.43x = 17,415.57 × 7,316.97
  4. Step 4: Simplify right side
    12,620.43x = 127,429,203.22
  5. Step 5: Solve for x
    x = 127,429,203.22/12,620.43
  6. Step 6: Final answer
    x = 10,097.06

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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.