Finding the Fourth Proportional to 18,090.74, 27,136.11 and 11,889.99
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Solution
The fourth proportional to 18,090.74, 27,136.11 and 11,889.99 is: 17,834.99
Step by Step Solution
- Step 1: Write the proportion equation
18,090.74 : 27,136.11 = 11,889.99 : x - Step 2: Convert to fraction form
18,090.74/27,136.11 = 11,889.99/x - Step 3: Cross multiply
18,090.74x = 27,136.11 × 11,889.99 - Step 4: Simplify right side
18,090.74x = 322,648,121.13 - Step 5: Solve for x
x = 322,648,121.13/18,090.74 - Step 6: Final answer
x = 17,834.99
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1.5x scale
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.