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Finding the Fourth Proportional to 21,874.00, 30,185.85 and 12,442.54

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Solution

The fourth proportional to 21,874.00, 30,185.85 and 12,442.54 is: 17,170.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,874.00 : 30,185.85 = 12,442.54 : x
  2. Step 2: Convert to fraction form
    21,874.00/30,185.85 = 12,442.54/x
  3. Step 3: Cross multiply
    21,874.00x = 30,185.85 × 12,442.54
  4. Step 4: Simplify right side
    21,874.00x = 375,588,617.25
  5. Step 5: Solve for x
    x = 375,588,617.25/21,874.00
  6. Step 6: Final answer
    x = 17,170.55

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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.