Home / 13,245.40-18,276.84-7,579.54

Finding the Fourth Proportional to 13,245.40, 18,276.84 and 7,579.54

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Solution

The fourth proportional to 13,245.40, 18,276.84 and 7,579.54 is: 10,458.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.40 : 18,276.84 = 7,579.54 : x
  2. Step 2: Convert to fraction form
    13,245.40/18,276.84 = 7,579.54/x
  3. Step 3: Cross multiply
    13,245.40x = 18,276.84 × 7,579.54
  4. Step 4: Simplify right side
    13,245.40x = 138,530,039.85
  5. Step 5: Solve for x
    x = 138,530,039.85/13,245.40
  6. Step 6: Final answer
    x = 10,458.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.