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Finding the Fourth Proportional to 27,954.50, 38,577.21 and 15,378.98

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Solution

The fourth proportional to 27,954.50, 38,577.21 and 15,378.98 is: 21,222.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,954.50 : 38,577.21 = 15,378.98 : x
  2. Step 2: Convert to fraction form
    27,954.50/38,577.21 = 15,378.98/x
  3. Step 3: Cross multiply
    27,954.50x = 38,577.21 × 15,378.98
  4. Step 4: Simplify right side
    27,954.50x = 593,278,141.05
  5. Step 5: Solve for x
    x = 593,278,141.05/27,954.50
  6. Step 6: Final answer
    x = 21,222.99

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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.