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Finding the Fourth Proportional to 18,453.78, 27,664.08 and 6,764.28

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Solution

The fourth proportional to 18,453.78, 27,664.08 and 6,764.28 is: 10,140.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.78 : 27,664.08 = 6,764.28 : x
  2. Step 2: Convert to fraction form
    18,453.78/27,664.08 = 6,764.28/x
  3. Step 3: Cross multiply
    18,453.78x = 27,664.08 × 6,764.28
  4. Step 4: Simplify right side
    18,453.78x = 187,127,583.06
  5. Step 5: Solve for x
    x = 187,127,583.06/18,453.78
  6. Step 6: Final answer
    x = 10,140.34

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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.