Home / 13,579.98-20,371.38-3,719.26

Finding the Fourth Proportional to 13,579.98, 20,371.38 and 3,719.26

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Solution

The fourth proportional to 13,579.98, 20,371.38 and 3,719.26 is: 5,579.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.98 : 20,371.38 = 3,719.26 : x
  2. Step 2: Convert to fraction form
    13,579.98/20,371.38 = 3,719.26/x
  3. Step 3: Cross multiply
    13,579.98x = 20,371.38 × 3,719.26
  4. Step 4: Simplify right side
    13,579.98x = 75,766,458.78
  5. Step 5: Solve for x
    x = 75,766,458.78/13,579.98
  6. Step 6: Final answer
    x = 5,579.28

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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.