Home / 13,579.80-20,370.62-3,718.26

Finding the Fourth Proportional to 13,579.80, 20,370.62 and 3,718.26

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Solution

The fourth proportional to 13,579.80, 20,370.62 and 3,718.26 is: 5,577.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.80 : 20,370.62 = 3,718.26 : x
  2. Step 2: Convert to fraction form
    13,579.80/20,370.62 = 3,718.26/x
  3. Step 3: Cross multiply
    13,579.80x = 20,370.62 × 3,718.26
  4. Step 4: Simplify right side
    13,579.80x = 75,743,261.52
  5. Step 5: Solve for x
    x = 75,743,261.52/13,579.80
  6. Step 6: Final answer
    x = 5,577.64

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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.