Finding the Fourth Proportional to 21,168.78, 29,212.44 and 11,737.14
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Solution
The fourth proportional to 21,168.78, 29,212.44 and 11,737.14 is: 16,196.99
Step by Step Solution
- Step 1: Write the proportion equation
21,168.78 : 29,212.44 = 11,737.14 : x - Step 2: Convert to fraction form
21,168.78/29,212.44 = 11,737.14/x - Step 3: Cross multiply
21,168.78x = 29,212.44 × 11,737.14 - Step 4: Simplify right side
21,168.78x = 342,870,498.02 - Step 5: Solve for x
x = 342,870,498.02/21,168.78 - Step 6: Final answer
x = 16,196.99
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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.