Finding the Fourth Proportional to 21,223,386.75, 29,267,466.84 and 13,474,976.97
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Solution
The fourth proportional to 21,223,386.75, 29,267,466.84 and 13,474,976.97 is: 18,582,257.69
Step by Step Solution
- Step 1: Write the proportion equation
21,223,386.75 : 29,267,466.84 = 13,474,976.97 : x - Step 2: Convert to fraction form
21,223,386.75/29,267,466.84 = 13,474,976.97/x - Step 3: Cross multiply
21,223,386.75x = 29,267,466.84 × 13,474,976.97 - Step 4: Simplify right side
21,223,386.75x = 394,378,441,639,238.69 - Step 5: Solve for x
x = 394,378,441,639,238.69/21,223,386.75 - Step 6: Final answer
x = 18,582,257.69
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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.