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Finding the Fourth Proportional to 12,902.61, 17,811.05 and 8,716.53

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Solution

The fourth proportional to 12,902.61, 17,811.05 and 8,716.53 is: 12,032.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,902.61 : 17,811.05 = 8,716.53 : x
  2. Step 2: Convert to fraction form
    12,902.61/17,811.05 = 8,716.53/x
  3. Step 3: Cross multiply
    12,902.61x = 17,811.05 × 8,716.53
  4. Step 4: Simplify right side
    12,902.61x = 155,250,508.07
  5. Step 5: Solve for x
    x = 155,250,508.07/12,902.61
  6. Step 6: Final answer
    x = 12,032.49

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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.