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Finding the Fourth Proportional to 19,621, 27,076.10 and 11,123

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Solution

The fourth proportional to 19,621, 27,076.10 and 11,123 is: 15,349.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,621 : 27,076.10 = 11,123 : x
  2. Step 2: Convert to fraction form
    19,621/27,076.10 = 11,123/x
  3. Step 3: Cross multiply
    19,621x = 27,076.10 × 11,123
  4. Step 4: Simplify right side
    19,621x = 301,167,460.30
  5. Step 5: Solve for x
    x = 301,167,460.30/19,621
  6. Step 6: Final answer
    x = 15,349.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.