Home / 21,917.22-30,449.81-21,654.78

Finding the Fourth Proportional to 21,917.22, 30,449.81 and 21,654.78

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Solution

The fourth proportional to 21,917.22, 30,449.81 and 21,654.78 is: 30,085.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,917.22 : 30,449.81 = 21,654.78 : x
  2. Step 2: Convert to fraction form
    21,917.22/30,449.81 = 21,654.78/x
  3. Step 3: Cross multiply
    21,917.22x = 30,449.81 × 21,654.78
  4. Step 4: Simplify right side
    21,917.22x = 659,383,828.32
  5. Step 5: Solve for x
    x = 659,383,828.32/21,917.22
  6. Step 6: Final answer
    x = 30,085.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.