Finding the Fourth Proportional to 13,268,896.20, 18,311,665.95 and 7,468,053.66
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Solution
The fourth proportional to 13,268,896.20, 18,311,665.95 and 7,468,053.66 is: 10,306,245.66
Step by Step Solution
- Step 1: Write the proportion equation
13,268,896.20 : 18,311,665.95 = 7,468,053.66 : x - Step 2: Convert to fraction form
13,268,896.20/18,311,665.95 = 7,468,053.66/x - Step 3: Cross multiply
13,268,896.20x = 18,311,665.95 × 7,468,053.66 - Step 4: Simplify right side
13,268,896.20x = 136,752,503,918,594.88 - Step 5: Solve for x
x = 136,752,503,918,594.88/13,268,896.20 - Step 6: Final answer
x = 10,306,245.66
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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.