Home / 21,450.26-32,241-20,990.90

Finding the Fourth Proportional to 21,450.26, 32,241 and 20,990.90

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Solution

The fourth proportional to 21,450.26, 32,241 and 20,990.90 is: 31,550.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.26 : 32,241 = 20,990.90 : x
  2. Step 2: Convert to fraction form
    21,450.26/32,241 = 20,990.90/x
  3. Step 3: Cross multiply
    21,450.26x = 32,241 × 20,990.90
  4. Step 4: Simplify right side
    21,450.26x = 676,767,606.90
  5. Step 5: Solve for x
    x = 676,767,606.90/21,450.26
  6. Step 6: Final answer
    x = 31,550.55

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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.