Home / 21,078.73-31,617.01-6,287.77

Finding the Fourth Proportional to 21,078.73, 31,617.01 and 6,287.77

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Solution

The fourth proportional to 21,078.73, 31,617.01 and 6,287.77 is: 9,431.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,078.73 : 31,617.01 = 6,287.77 : x
  2. Step 2: Convert to fraction form
    21,078.73/31,617.01 = 6,287.77/x
  3. Step 3: Cross multiply
    21,078.73x = 31,617.01 × 6,287.77
  4. Step 4: Simplify right side
    21,078.73x = 198,800,486.97
  5. Step 5: Solve for x
    x = 198,800,486.97/21,078.73
  6. Step 6: Final answer
    x = 9,431.33

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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.