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Finding the Fourth Proportional to 12,608.10, 17,410.99 and 7,900.59

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Solution

The fourth proportional to 12,608.10, 17,410.99 and 7,900.59 is: 10,910.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,608.10 : 17,410.99 = 7,900.59 : x
  2. Step 2: Convert to fraction form
    12,608.10/17,410.99 = 7,900.59/x
  3. Step 3: Cross multiply
    12,608.10x = 17,410.99 × 7,900.59
  4. Step 4: Simplify right side
    12,608.10x = 137,557,026.18
  5. Step 5: Solve for x
    x = 137,557,026.18/12,608.10
  6. Step 6: Final answer
    x = 10,910.21

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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.