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Finding the Fourth Proportional to 26,978.52, 37,229 and 15,039.54

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Solution

The fourth proportional to 26,978.52, 37,229 and 15,039.54 is: 20,753.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,978.52 : 37,229 = 15,039.54 : x
  2. Step 2: Convert to fraction form
    26,978.52/37,229 = 15,039.54/x
  3. Step 3: Cross multiply
    26,978.52x = 37,229 × 15,039.54
  4. Step 4: Simplify right side
    26,978.52x = 559,907,034.66
  5. Step 5: Solve for x
    x = 559,907,034.66/26,978.52
  6. Step 6: Final answer
    x = 20,753.81

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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.