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Finding the Fourth Proportional to 12,936.16, 17,852.34 and 7,899.76

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Solution

The fourth proportional to 12,936.16, 17,852.34 and 7,899.76 is: 10,901.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.16 : 17,852.34 = 7,899.76 : x
  2. Step 2: Convert to fraction form
    12,936.16/17,852.34 = 7,899.76/x
  3. Step 3: Cross multiply
    12,936.16x = 17,852.34 × 7,899.76
  4. Step 4: Simplify right side
    12,936.16x = 141,029,201.44
  5. Step 5: Solve for x
    x = 141,029,201.44/12,936.16
  6. Step 6: Final answer
    x = 10,901.94

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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.