Home / 27,138.25-40,719.02-13,999.85

Finding the Fourth Proportional to 27,138.25, 40,719.02 and 13,999.85

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Solution

The fourth proportional to 27,138.25, 40,719.02 and 13,999.85 is: 21,005.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,138.25 : 40,719.02 = 13,999.85 : x
  2. Step 2: Convert to fraction form
    27,138.25/40,719.02 = 13,999.85/x
  3. Step 3: Cross multiply
    27,138.25x = 40,719.02 × 13,999.85
  4. Step 4: Simplify right side
    27,138.25x = 570,060,172.15
  5. Step 5: Solve for x
    x = 570,060,172.15/27,138.25
  6. Step 6: Final answer
    x = 21,005.78

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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.