Home / 21,219.97-31,825.84-20,166.26

Finding the Fourth Proportional to 21,219.97, 31,825.84 and 20,166.26

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Solution

The fourth proportional to 21,219.97, 31,825.84 and 20,166.26 is: 30,245.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.97 : 31,825.84 = 20,166.26 : x
  2. Step 2: Convert to fraction form
    21,219.97/31,825.84 = 20,166.26/x
  3. Step 3: Cross multiply
    21,219.97x = 31,825.84 × 20,166.26
  4. Step 4: Simplify right side
    21,219.97x = 641,808,164.16
  5. Step 5: Solve for x
    x = 641,808,164.16/21,219.97
  6. Step 6: Final answer
    x = 30,245.48

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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.