Finding the Fourth Proportional to 11,190,847.20, 16,786,270.80 and 8,356,495.20
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Solution
The fourth proportional to 11,190,847.20, 16,786,270.80 and 8,356,495.20 is: 12,534,742.80
Step by Step Solution
- Step 1: Write the proportion equation
11,190,847.20 : 16,786,270.80 = 8,356,495.20 : x - Step 2: Convert to fraction form
11,190,847.20/16,786,270.80 = 8,356,495.20/x - Step 3: Cross multiply
11,190,847.20x = 16,786,270.80 × 8,356,495.20 - Step 4: Simplify right side
11,190,847.20x = 140,274,391,366,100.17 - Step 5: Solve for x
x = 140,274,391,366,100.17/11,190,847.20 - Step 6: Final answer
x = 12,534,742.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.