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Finding the Fourth Proportional to 12,792.88, 19,194.72 and 5,398.96

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Solution

The fourth proportional to 12,792.88, 19,194.72 and 5,398.96 is: 8,100.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,792.88 : 19,194.72 = 5,398.96 : x
  2. Step 2: Convert to fraction form
    12,792.88/19,194.72 = 5,398.96/x
  3. Step 3: Cross multiply
    12,792.88x = 19,194.72 × 5,398.96
  4. Step 4: Simplify right side
    12,792.88x = 103,631,525.49
  5. Step 5: Solve for x
    x = 103,631,525.49/12,792.88
  6. Step 6: Final answer
    x = 8,100.72

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.