Home / 21,996.40-32,908.20-19,922.80

Finding the Fourth Proportional to 21,996.40, 32,908.20 and 19,922.80

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Solution

The fourth proportional to 21,996.40, 32,908.20 and 19,922.80 is: 29,805.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,996.40 : 32,908.20 = 19,922.80 : x
  2. Step 2: Convert to fraction form
    21,996.40/32,908.20 = 19,922.80/x
  3. Step 3: Cross multiply
    21,996.40x = 32,908.20 × 19,922.80
  4. Step 4: Simplify right side
    21,996.40x = 655,623,486.96
  5. Step 5: Solve for x
    x = 655,623,486.96/21,996.40
  6. Step 6: Final answer
    x = 29,805.94

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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.