Finding the Fourth Proportional to 21,163.63, 29,204.23 and 11,601.99
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Solution
The fourth proportional to 21,163.63, 29,204.23 and 11,601.99 is: 16,009.88
Step by Step Solution
- Step 1: Write the proportion equation
21,163.63 : 29,204.23 = 11,601.99 : x - Step 2: Convert to fraction form
21,163.63/29,204.23 = 11,601.99/x - Step 3: Cross multiply
21,163.63x = 29,204.23 × 11,601.99 - Step 4: Simplify right side
21,163.63x = 338,827,184.42 - Step 5: Solve for x
x = 338,827,184.42/21,163.63 - Step 6: Final answer
x = 16,009.88
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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.