Home / 12,379.06-18,568.68-3,620.08

Finding the Fourth Proportional to 12,379.06, 18,568.68 and 3,620.08

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Solution

The fourth proportional to 12,379.06, 18,568.68 and 3,620.08 is: 5,430.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379.06 : 18,568.68 = 3,620.08 : x
  2. Step 2: Convert to fraction form
    12,379.06/18,568.68 = 3,620.08/x
  3. Step 3: Cross multiply
    12,379.06x = 18,568.68 × 3,620.08
  4. Step 4: Simplify right side
    12,379.06x = 67,220,107.09
  5. Step 5: Solve for x
    x = 67,220,107.09/12,379.06
  6. Step 6: Final answer
    x = 5,430.15

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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.