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Finding the Fourth Proportional to 26,978.15, 37,216.61 and 18,027.85

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Solution

The fourth proportional to 26,978.15, 37,216.61 and 18,027.85 is: 24,869.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,978.15 : 37,216.61 = 18,027.85 : x
  2. Step 2: Convert to fraction form
    26,978.15/37,216.61 = 18,027.85/x
  3. Step 3: Cross multiply
    26,978.15x = 37,216.61 × 18,027.85
  4. Step 4: Simplify right side
    26,978.15x = 670,935,347.01
  5. Step 5: Solve for x
    x = 670,935,347.01/26,978.15
  6. Step 6: Final answer
    x = 24,869.59

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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.