Home / 20,844.06-28,763.75-11,891.22

Finding the Fourth Proportional to 20,844.06, 28,763.75 and 11,891.22

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Solution

The fourth proportional to 20,844.06, 28,763.75 and 11,891.22 is: 16,409.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.06 : 28,763.75 = 11,891.22 : x
  2. Step 2: Convert to fraction form
    20,844.06/28,763.75 = 11,891.22/x
  3. Step 3: Cross multiply
    20,844.06x = 28,763.75 × 11,891.22
  4. Step 4: Simplify right side
    20,844.06x = 342,036,019.82
  5. Step 5: Solve for x
    x = 342,036,019.82/20,844.06
  6. Step 6: Final answer
    x = 16,409.28

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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.