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Finding the Fourth Proportional to 18,010.16, 27,018.12 and 7,622

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Solution

The fourth proportional to 18,010.16, 27,018.12 and 7,622 is: 11,434.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,010.16 : 27,018.12 = 7,622 : x
  2. Step 2: Convert to fraction form
    18,010.16/27,018.12 = 7,622/x
  3. Step 3: Cross multiply
    18,010.16x = 27,018.12 × 7,622
  4. Step 4: Simplify right side
    18,010.16x = 205,932,110.64
  5. Step 5: Solve for x
    x = 205,932,110.64/18,010.16
  6. Step 6: Final answer
    x = 11,434.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.