Home / 18,026.78-27,040.35-4,879.28

Finding the Fourth Proportional to 18,026.78, 27,040.35 and 4,879.28

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Solution

The fourth proportional to 18,026.78, 27,040.35 and 4,879.28 is: 7,318.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,026.78 : 27,040.35 = 4,879.28 : x
  2. Step 2: Convert to fraction form
    18,026.78/27,040.35 = 4,879.28/x
  3. Step 3: Cross multiply
    18,026.78x = 27,040.35 × 4,879.28
  4. Step 4: Simplify right side
    18,026.78x = 131,937,438.95
  5. Step 5: Solve for x
    x = 131,937,438.95/18,026.78
  6. Step 6: Final answer
    x = 7,318.97

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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.