Home / 19,121.06-26,399.79-11,961.81

Finding the Fourth Proportional to 19,121.06, 26,399.79 and 11,961.81

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Solution

The fourth proportional to 19,121.06, 26,399.79 and 11,961.81 is: 16,515.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.06 : 26,399.79 = 11,961.81 : x
  2. Step 2: Convert to fraction form
    19,121.06/26,399.79 = 11,961.81/x
  3. Step 3: Cross multiply
    19,121.06x = 26,399.79 × 11,961.81
  4. Step 4: Simplify right side
    19,121.06x = 315,789,272.02
  5. Step 5: Solve for x
    x = 315,789,272.02/19,121.06
  6. Step 6: Final answer
    x = 16,515.26

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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.