Home / 12,626.22-18,919.89-7,999.50

Finding the Fourth Proportional to 12,626.22, 18,919.89 and 7,999.50

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Solution

The fourth proportional to 12,626.22, 18,919.89 and 7,999.50 is: 11,986.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,626.22 : 18,919.89 = 7,999.50 : x
  2. Step 2: Convert to fraction form
    12,626.22/18,919.89 = 7,999.50/x
  3. Step 3: Cross multiply
    12,626.22x = 18,919.89 × 7,999.50
  4. Step 4: Simplify right side
    12,626.22x = 151,349,660.06
  5. Step 5: Solve for x
    x = 151,349,660.06/12,626.22
  6. Step 6: Final answer
    x = 11,986.93

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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.