Home / 21,078.05-31,619.19-6,085.54

Finding the Fourth Proportional to 21,078.05, 31,619.19 and 6,085.54

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Solution

The fourth proportional to 21,078.05, 31,619.19 and 6,085.54 is: 9,128.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,078.05 : 31,619.19 = 6,085.54 : x
  2. Step 2: Convert to fraction form
    21,078.05/31,619.19 = 6,085.54/x
  3. Step 3: Cross multiply
    21,078.05x = 31,619.19 × 6,085.54
  4. Step 4: Simplify right side
    21,078.05x = 192,419,845.51
  5. Step 5: Solve for x
    x = 192,419,845.51/21,078.05
  6. Step 6: Final answer
    x = 9,128.92

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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.