Finding the Fourth Proportional to 14.11, 21.21 and 6.99
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Solution
The fourth proportional to 14.11, 21.21 and 6.99 is: 10.50
Step by Step Solution
- Step 1: Write the proportion equation
14.11 : 21.21 = 6.99 : x - Step 2: Convert to fraction form
14.11/21.21 = 6.99/x - Step 3: Cross multiply
14.11x = 21.21 × 6.99 - Step 4: Simplify right side
14.11x = 148.22 - Step 5: Solve for x
x = 148.22/14.11 - Step 6: Final answer
x = 10.50
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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.