Finding the Fourth Proportional to 13.99, 20.94 and 7.99
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Solution
The fourth proportional to 13.99, 20.94 and 7.99 is: 11.96
Step by Step Solution
- Step 1: Write the proportion equation
13.99 : 20.94 = 7.99 : x - Step 2: Convert to fraction form
13.99/20.94 = 7.99/x - Step 3: Cross multiply
13.99x = 20.94 × 7.99 - Step 4: Simplify right side
13.99x = 167.31 - Step 5: Solve for x
x = 167.31/13.99 - Step 6: Final answer
x = 11.96
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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.