Finding the Fourth Proportional to 18,122.68, 25,020.92 and 14,773.53
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Solution
The fourth proportional to 18,122.68, 25,020.92 and 14,773.53 is: 20,396.95
Step by Step Solution
- Step 1: Write the proportion equation
18,122.68 : 25,020.92 = 14,773.53 : x - Step 2: Convert to fraction form
18,122.68/25,020.92 = 14,773.53/x - Step 3: Cross multiply
18,122.68x = 25,020.92 × 14,773.53 - Step 4: Simplify right side
18,122.68x = 369,647,349.18 - Step 5: Solve for x
x = 369,647,349.18/18,122.68 - Step 6: Final answer
x = 20,396.95
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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.