Home / 13,139.73-19,788.28-11,072.61

Finding the Fourth Proportional to 13,139.73, 19,788.28 and 11,072.61

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Solution

The fourth proportional to 13,139.73, 19,788.28 and 11,072.61 is: 16,675.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.73 : 19,788.28 = 11,072.61 : x
  2. Step 2: Convert to fraction form
    13,139.73/19,788.28 = 11,072.61/x
  3. Step 3: Cross multiply
    13,139.73x = 19,788.28 × 11,072.61
  4. Step 4: Simplify right side
    13,139.73x = 219,107,879.33
  5. Step 5: Solve for x
    x = 219,107,879.33/13,139.73
  6. Step 6: Final answer
    x = 16,675.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.