Finding the Fourth Proportional to 21,368.25, 29,491.83 and 11,934.99
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Solution
The fourth proportional to 21,368.25, 29,491.83 and 11,934.99 is: 16,472.32
Step by Step Solution
- Step 1: Write the proportion equation
21,368.25 : 29,491.83 = 11,934.99 : x - Step 2: Convert to fraction form
21,368.25/29,491.83 = 11,934.99/x - Step 3: Cross multiply
21,368.25x = 29,491.83 × 11,934.99 - Step 4: Simplify right side
21,368.25x = 351,984,696.13 - Step 5: Solve for x
x = 351,984,696.13/21,368.25 - Step 6: Final answer
x = 16,472.32
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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.