Finding the Fourth Proportional to 20,605.44, 30,860.09 and 15,044.99
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Solution
The fourth proportional to 20,605.44, 30,860.09 and 15,044.99 is: 22,532.39
Step by Step Solution
- Step 1: Write the proportion equation
20,605.44 : 30,860.09 = 15,044.99 : x - Step 2: Convert to fraction form
20,605.44/30,860.09 = 15,044.99/x - Step 3: Cross multiply
20,605.44x = 30,860.09 × 15,044.99 - Step 4: Simplify right side
20,605.44x = 464,289,745.93 - Step 5: Solve for x
x = 464,289,745.93/20,605.44 - Step 6: Final answer
x = 22,532.39
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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.