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Finding the Fourth Proportional to 12,918.52, 17,822.96 and 8,444.84

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Solution

The fourth proportional to 12,918.52, 17,822.96 and 8,444.84 is: 11,650.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.52 : 17,822.96 = 8,444.84 : x
  2. Step 2: Convert to fraction form
    12,918.52/17,822.96 = 8,444.84/x
  3. Step 3: Cross multiply
    12,918.52x = 17,822.96 × 8,444.84
  4. Step 4: Simplify right side
    12,918.52x = 150,512,045.53
  5. Step 5: Solve for x
    x = 150,512,045.53/12,918.52
  6. Step 6: Final answer
    x = 11,650.87

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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.