Finding the Fourth Proportional to 20,443,280.28, 28,211,747.88 and 11,743,136.09
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Solution
The fourth proportional to 20,443,280.28, 28,211,747.88 and 11,743,136.09 is: 16,205,539.91
Step by Step Solution
- Step 1: Write the proportion equation
20,443,280.28 : 28,211,747.88 = 11,743,136.09 : x - Step 2: Convert to fraction form
20,443,280.28/28,211,747.88 = 11,743,136.09/x - Step 3: Cross multiply
20,443,280.28x = 28,211,747.88 × 11,743,136.09 - Step 4: Simplify right side
20,443,280.28x = 331,294,394,550,550.25 - Step 5: Solve for x
x = 331,294,394,550,550.25/20,443,280.28 - Step 6: Final answer
x = 16,205,539.91
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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.