Finding the Fourth Proportional to 12,128,974.74, 16,738,042.64 and 6,622,461.09
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Solution
The fourth proportional to 12,128,974.74, 16,738,042.64 and 6,622,461.09 is: 9,139,027.70
Step by Step Solution
- Step 1: Write the proportion equation
12,128,974.74 : 16,738,042.64 = 6,622,461.09 : x - Step 2: Convert to fraction form
12,128,974.74/16,738,042.64 = 6,622,461.09/x - Step 3: Cross multiply
12,128,974.74x = 16,738,042.64 × 6,622,461.09 - Step 4: Simplify right side
12,128,974.74x = 110,847,036,073,048.56 - Step 5: Solve for x
x = 110,847,036,073,048.56/12,128,974.74 - Step 6: Final answer
x = 9,139,027.70
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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.