Home / 21,912.96-32,841.20-19,090.38

Finding the Fourth Proportional to 21,912.96, 32,841.20 and 19,090.38

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Solution

The fourth proportional to 21,912.96, 32,841.20 and 19,090.38 is: 28,610.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.96 : 32,841.20 = 19,090.38 : x
  2. Step 2: Convert to fraction form
    21,912.96/32,841.20 = 19,090.38/x
  3. Step 3: Cross multiply
    21,912.96x = 32,841.20 × 19,090.38
  4. Step 4: Simplify right side
    21,912.96x = 626,950,987.66
  5. Step 5: Solve for x
    x = 626,950,987.66/21,912.96
  6. Step 6: Final answer
    x = 28,610.97

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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.