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Finding the Fourth Proportional to 27,959.58, 41,980.68 and 18,657.54

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Solution

The fourth proportional to 27,959.58, 41,980.68 and 18,657.54 is: 28,013.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,959.58 : 41,980.68 = 18,657.54 : x
  2. Step 2: Convert to fraction form
    27,959.58/41,980.68 = 18,657.54/x
  3. Step 3: Cross multiply
    27,959.58x = 41,980.68 × 18,657.54
  4. Step 4: Simplify right side
    27,959.58x = 783,256,216.33
  5. Step 5: Solve for x
    x = 783,256,216.33/27,959.58
  6. Step 6: Final answer
    x = 28,013.88

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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.