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Finding the Fourth Proportional to 27,978.86, 41,954.03 and 13,748.28

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Solution

The fourth proportional to 27,978.86, 41,954.03 and 13,748.28 is: 20,615.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,978.86 : 41,954.03 = 13,748.28 : x
  2. Step 2: Convert to fraction form
    27,978.86/41,954.03 = 13,748.28/x
  3. Step 3: Cross multiply
    27,978.86x = 41,954.03 × 13,748.28
  4. Step 4: Simplify right side
    27,978.86x = 576,795,473.06
  5. Step 5: Solve for x
    x = 576,795,473.06/27,978.86
  6. Step 6: Final answer
    x = 20,615.41

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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.