Finding the Fourth Proportional to 20,230.71, 30,324.99 and 11,332.99
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Solution
The fourth proportional to 20,230.71, 30,324.99 and 11,332.99 is: 16,987.68
Step by Step Solution
- Step 1: Write the proportion equation
20,230.71 : 30,324.99 = 11,332.99 : x - Step 2: Convert to fraction form
20,230.71/30,324.99 = 11,332.99/x - Step 3: Cross multiply
20,230.71x = 30,324.99 × 11,332.99 - Step 4: Simplify right side
20,230.71x = 343,672,808.42 - Step 5: Solve for x
x = 343,672,808.42/20,230.71 - Step 6: Final answer
x = 16,987.68
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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.