Finding the Fourth Proportional to 21,279,810.96, 29,366,325.64 and 12,113,043.12
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Solution
The fourth proportional to 21,279,810.96, 29,366,325.64 and 12,113,043.12 is: 16,716,105.68
Step by Step Solution
- Step 1: Write the proportion equation
21,279,810.96 : 29,366,325.64 = 12,113,043.12 : x - Step 2: Convert to fraction form
21,279,810.96/29,366,325.64 = 12,113,043.12/x - Step 3: Cross multiply
21,279,810.96x = 29,366,325.64 × 12,113,043.12 - Step 4: Simplify right side
21,279,810.96x = 355,715,568,753,281.56 - Step 5: Solve for x
x = 355,715,568,753,281.56/21,279,810.96 - Step 6: Final answer
x = 16,716,105.68
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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.