Finding the Fourth Proportional to 13,622,759.60, 18,803,963.79 and 8,117,861.31
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Solution
The fourth proportional to 13,622,759.60, 18,803,963.79 and 8,117,861.31 is: 11,205,363.28
Step by Step Solution
- Step 1: Write the proportion equation
13,622,759.60 : 18,803,963.79 = 8,117,861.31 : x - Step 2: Convert to fraction form
13,622,759.60/18,803,963.79 = 8,117,861.31/x - Step 3: Cross multiply
13,622,759.60x = 18,803,963.79 × 8,117,861.31 - Step 4: Simplify right side
13,622,759.60x = 152,647,970,125,481.94 - Step 5: Solve for x
x = 152,647,970,125,481.94/13,622,759.60 - Step 6: Final answer
x = 11,205,363.28
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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.