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Finding the Fourth Proportional to 19,624.78, 27,082.20 and 11,127.07

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Solution

The fourth proportional to 19,624.78, 27,082.20 and 11,127.07 is: 15,355.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,624.78 : 27,082.20 = 11,127.07 : x
  2. Step 2: Convert to fraction form
    19,624.78/27,082.20 = 11,127.07/x
  3. Step 3: Cross multiply
    19,624.78x = 27,082.20 × 11,127.07
  4. Step 4: Simplify right side
    19,624.78x = 301,345,548.14
  5. Step 5: Solve for x
    x = 301,345,548.14/19,624.78
  6. Step 6: Final answer
    x = 15,355.36

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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.