Home / 13,579.88-20,370.48-4,226.28

Finding the Fourth Proportional to 13,579.88, 20,370.48 and 4,226.28

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Solution

The fourth proportional to 13,579.88, 20,370.48 and 4,226.28 is: 6,339.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.88 : 20,370.48 = 4,226.28 : x
  2. Step 2: Convert to fraction form
    13,579.88/20,370.48 = 4,226.28/x
  3. Step 3: Cross multiply
    13,579.88x = 20,370.48 × 4,226.28
  4. Step 4: Simplify right side
    13,579.88x = 86,091,352.21
  5. Step 5: Solve for x
    x = 86,091,352.21/13,579.88
  6. Step 6: Final answer
    x = 6,339.63

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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.