Home / 36,145.09-54,221.31-12,449.54

Finding the Fourth Proportional to 36,145.09, 54,221.31 and 12,449.54

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Solution

The fourth proportional to 36,145.09, 54,221.31 and 12,449.54 is: 18,675.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,145.09 : 54,221.31 = 12,449.54 : x
  2. Step 2: Convert to fraction form
    36,145.09/54,221.31 = 12,449.54/x
  3. Step 3: Cross multiply
    36,145.09x = 54,221.31 × 12,449.54
  4. Step 4: Simplify right side
    36,145.09x = 675,030,305.45
  5. Step 5: Solve for x
    x = 675,030,305.45/36,145.09
  6. Step 6: Final answer
    x = 18,675.58

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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.