Home / 12,718.94-19,069.29-3,949.07

Finding the Fourth Proportional to 12,718.94, 19,069.29 and 3,949.07

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Solution

The fourth proportional to 12,718.94, 19,069.29 and 3,949.07 is: 5,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.94 : 19,069.29 = 3,949.07 : x
  2. Step 2: Convert to fraction form
    12,718.94/19,069.29 = 3,949.07/x
  3. Step 3: Cross multiply
    12,718.94x = 19,069.29 × 3,949.07
  4. Step 4: Simplify right side
    12,718.94x = 75,305,865.71
  5. Step 5: Solve for x
    x = 75,305,865.71/12,718.94
  6. Step 6: Final answer
    x = 5,920.77

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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.