Home / 21,990.35-32,993.82-13,231.41

Finding the Fourth Proportional to 21,990.35, 32,993.82 and 13,231.41

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Solution

The fourth proportional to 21,990.35, 32,993.82 and 13,231.41 is: 19,852.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990.35 : 32,993.82 = 13,231.41 : x
  2. Step 2: Convert to fraction form
    21,990.35/32,993.82 = 13,231.41/x
  3. Step 3: Cross multiply
    21,990.35x = 32,993.82 × 13,231.41
  4. Step 4: Simplify right side
    21,990.35x = 436,554,759.89
  5. Step 5: Solve for x
    x = 436,554,759.89/21,990.35
  6. Step 6: Final answer
    x = 19,852.11

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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.