Finding the Fourth Proportional to 18,934.20, 26,131.14 and 11,382.99
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Solution
The fourth proportional to 18,934.20, 26,131.14 and 11,382.99 is: 15,709.69
Step by Step Solution
- Step 1: Write the proportion equation
18,934.20 : 26,131.14 = 11,382.99 : x - Step 2: Convert to fraction form
18,934.20/26,131.14 = 11,382.99/x - Step 3: Cross multiply
18,934.20x = 26,131.14 × 11,382.99 - Step 4: Simplify right side
18,934.20x = 297,450,505.31 - Step 5: Solve for x
x = 297,450,505.31/18,934.20 - Step 6: Final answer
x = 15,709.69
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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.