Finding the Fourth Proportional to 28,293,172.75, 39,044,578.40 and 15,416,116.75
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Solution
The fourth proportional to 28,293,172.75, 39,044,578.40 and 15,416,116.75 is: 21,274,241.12
Step by Step Solution
- Step 1: Write the proportion equation
28,293,172.75 : 39,044,578.40 = 15,416,116.75 : x - Step 2: Convert to fraction form
28,293,172.75/39,044,578.40 = 15,416,116.75/x - Step 3: Cross multiply
28,293,172.75x = 39,044,578.40 × 15,416,116.75 - Step 4: Simplify right side
28,293,172.75x = 601,915,779,068,928.12 - Step 5: Solve for x
x = 601,915,779,068,928.12/28,293,172.75 - Step 6: Final answer
x = 21,274,241.12
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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.