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Finding the Fourth Proportional to 15,922.14, 21,972.49 and 8,752.54

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Solution

The fourth proportional to 15,922.14, 21,972.49 and 8,752.54 is: 12,078.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,922.14 : 21,972.49 = 8,752.54 : x
  2. Step 2: Convert to fraction form
    15,922.14/21,972.49 = 8,752.54/x
  3. Step 3: Cross multiply
    15,922.14x = 21,972.49 × 8,752.54
  4. Step 4: Simplify right side
    15,922.14x = 192,314,987.76
  5. Step 5: Solve for x
    x = 192,314,987.76/15,922.14
  6. Step 6: Final answer
    x = 12,078.46

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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.