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Finding the Fourth Proportional to 26,978.05, 37,227.97 and 15,040.68

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Solution

The fourth proportional to 26,978.05, 37,227.97 and 15,040.68 is: 20,755.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,978.05 : 37,227.97 = 15,040.68 : x
  2. Step 2: Convert to fraction form
    26,978.05/37,227.97 = 15,040.68/x
  3. Step 3: Cross multiply
    26,978.05x = 37,227.97 × 15,040.68
  4. Step 4: Simplify right side
    26,978.05x = 559,933,983.82
  5. Step 5: Solve for x
    x = 559,933,983.82/26,978.05
  6. Step 6: Final answer
    x = 20,755.17

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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.