Home / 26,879.68-40,138.36-21,959.04

Finding the Fourth Proportional to 26,879.68, 40,138.36 and 21,959.04

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Solution

The fourth proportional to 26,879.68, 40,138.36 and 21,959.04 is: 32,790.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,879.68 : 40,138.36 = 21,959.04 : x
  2. Step 2: Convert to fraction form
    26,879.68/40,138.36 = 21,959.04/x
  3. Step 3: Cross multiply
    26,879.68x = 40,138.36 × 21,959.04
  4. Step 4: Simplify right side
    26,879.68x = 881,399,852.77
  5. Step 5: Solve for x
    x = 881,399,852.77/26,879.68
  6. Step 6: Final answer
    x = 32,790.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.