Finding the Fourth Proportional to 18,825, 25,989.74 and 11,760.99
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Solution
The fourth proportional to 18,825, 25,989.74 and 11,760.99 is: 16,237.19
Step by Step Solution
- Step 1: Write the proportion equation
18,825 : 25,989.74 = 11,760.99 : x - Step 2: Convert to fraction form
18,825/25,989.74 = 11,760.99/x - Step 3: Cross multiply
18,825x = 25,989.74 × 11,760.99 - Step 4: Simplify right side
18,825x = 305,665,072.24 - Step 5: Solve for x
x = 305,665,072.24/18,825 - Step 6: Final answer
x = 16,237.19
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.