Home / 13,579.22-20,362.68-4,216.47

Finding the Fourth Proportional to 13,579.22, 20,362.68 and 4,216.47

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Solution

The fourth proportional to 13,579.22, 20,362.68 and 4,216.47 is: 6,322.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.22 : 20,362.68 = 4,216.47 : x
  2. Step 2: Convert to fraction form
    13,579.22/20,362.68 = 4,216.47/x
  3. Step 3: Cross multiply
    13,579.22x = 20,362.68 × 4,216.47
  4. Step 4: Simplify right side
    13,579.22x = 85,858,575.69
  5. Step 5: Solve for x
    x = 85,858,575.69/13,579.22
  6. Step 6: Final answer
    x = 6,322.79

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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.