Home / 13,305-19,960.89-3,945.36

Finding the Fourth Proportional to 13,305, 19,960.89 and 3,945.36

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Solution

The fourth proportional to 13,305, 19,960.89 and 3,945.36 is: 5,919.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305 : 19,960.89 = 3,945.36 : x
  2. Step 2: Convert to fraction form
    13,305/19,960.89 = 3,945.36/x
  3. Step 3: Cross multiply
    13,305x = 19,960.89 × 3,945.36
  4. Step 4: Simplify right side
    13,305x = 78,752,896.97
  5. Step 5: Solve for x
    x = 78,752,896.97/13,305
  6. Step 6: Final answer
    x = 5,919.05

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1.5x scale

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.