Finding the Fourth Proportional to 13,469.47, 20,205.58 and 3,609.75
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Solution
The fourth proportional to 13,469.47, 20,205.58 and 3,609.75 is: 5,414.99
Step by Step Solution
- Step 1: Write the proportion equation
13,469.47 : 20,205.58 = 3,609.75 : x - Step 2: Convert to fraction form
13,469.47/20,205.58 = 3,609.75/x - Step 3: Cross multiply
13,469.47x = 20,205.58 × 3,609.75 - Step 4: Simplify right side
13,469.47x = 72,937,092.41 - Step 5: Solve for x
x = 72,937,092.41/13,469.47 - Step 6: Final answer
x = 5,414.99
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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.