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Finding the Fourth Proportional to 16,272.55, 22,571.14 and 15,840.70

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Solution

The fourth proportional to 16,272.55, 22,571.14 and 15,840.70 is: 21,972.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,272.55 : 22,571.14 = 15,840.70 : x
  2. Step 2: Convert to fraction form
    16,272.55/22,571.14 = 15,840.70/x
  3. Step 3: Cross multiply
    16,272.55x = 22,571.14 × 15,840.70
  4. Step 4: Simplify right side
    16,272.55x = 357,542,753.12
  5. Step 5: Solve for x
    x = 357,542,753.12/16,272.55
  6. Step 6: Final answer
    x = 21,972.15

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These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.