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Finding the Fourth Proportional to 27,871.58, 41,812.86 and 12,289.34

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Solution

The fourth proportional to 27,871.58, 41,812.86 and 12,289.34 is: 18,436.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,871.58 : 41,812.86 = 12,289.34 : x
  2. Step 2: Convert to fraction form
    27,871.58/41,812.86 = 12,289.34/x
  3. Step 3: Cross multiply
    27,871.58x = 41,812.86 × 12,289.34
  4. Step 4: Simplify right side
    27,871.58x = 513,852,452.91
  5. Step 5: Solve for x
    x = 513,852,452.91/27,871.58
  6. Step 6: Final answer
    x = 18,436.43

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.