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Finding the Fourth Proportional to 15,302.97, 21,118.05 and 8,933.94

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Solution

The fourth proportional to 15,302.97, 21,118.05 and 8,933.94 is: 12,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,302.97 : 21,118.05 = 8,933.94 : x
  2. Step 2: Convert to fraction form
    15,302.97/21,118.05 = 8,933.94/x
  3. Step 3: Cross multiply
    15,302.97x = 21,118.05 × 8,933.94
  4. Step 4: Simplify right side
    15,302.97x = 188,667,391.62
  5. Step 5: Solve for x
    x = 188,667,391.62/15,302.97
  6. Step 6: Final answer
    x = 12,328.81

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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.