Finding the Fourth Proportional to 14,485,815.20, 21,731,347.20 and 7,279,212.80
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Solution
The fourth proportional to 14,485,815.20, 21,731,347.20 and 7,279,212.80 is: 10,920,137.98
Step by Step Solution
- Step 1: Write the proportion equation
14,485,815.20 : 21,731,347.20 = 7,279,212.80 : x - Step 2: Convert to fraction form
14,485,815.20/21,731,347.20 = 7,279,212.80/x - Step 3: Cross multiply
14,485,815.20x = 21,731,347.20 × 7,279,212.80 - Step 4: Simplify right side
14,485,815.20x = 158,187,100,699,484.16 - Step 5: Solve for x
x = 158,187,100,699,484.16/14,485,815.20 - Step 6: Final answer
x = 10,920,137.98
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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.