Home / 13,949.73-19,249.38-7,981.38

Finding the Fourth Proportional to 13,949.73, 19,249.38 and 7,981.38

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Solution

The fourth proportional to 13,949.73, 19,249.38 and 7,981.38 is: 11,013.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.73 : 19,249.38 = 7,981.38 : x
  2. Step 2: Convert to fraction form
    13,949.73/19,249.38 = 7,981.38/x
  3. Step 3: Cross multiply
    13,949.73x = 19,249.38 × 7,981.38
  4. Step 4: Simplify right side
    13,949.73x = 153,636,616.54
  5. Step 5: Solve for x
    x = 153,636,616.54/13,949.73
  6. Step 6: Final answer
    x = 11,013.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.