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Finding the Fourth Proportional to 20,211.97, 27,893.01 and 11,259.63

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Solution

The fourth proportional to 20,211.97, 27,893.01 and 11,259.63 is: 15,538.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.97 : 27,893.01 = 11,259.63 : x
  2. Step 2: Convert to fraction form
    20,211.97/27,893.01 = 11,259.63/x
  3. Step 3: Cross multiply
    20,211.97x = 27,893.01 × 11,259.63
  4. Step 4: Simplify right side
    20,211.97x = 314,064,972.19
  5. Step 5: Solve for x
    x = 314,064,972.19/20,211.97
  6. Step 6: Final answer
    x = 15,538.56

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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.