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Finding the Fourth Proportional to 15,405.78, 22,997.20 and 13,537.42

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Solution

The fourth proportional to 15,405.78, 22,997.20 and 13,537.42 is: 20,208.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.78 : 22,997.20 = 13,537.42 : x
  2. Step 2: Convert to fraction form
    15,405.78/22,997.20 = 13,537.42/x
  3. Step 3: Cross multiply
    15,405.78x = 22,997.20 × 13,537.42
  4. Step 4: Simplify right side
    15,405.78x = 311,322,755.22
  5. Step 5: Solve for x
    x = 311,322,755.22/15,405.78
  6. Step 6: Final answer
    x = 20,208.18

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.