Finding the Fourth Proportional to 20,639,716.94, 28,482,827.60 and 11,347,445.12
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Solution
The fourth proportional to 20,639,716.94, 28,482,827.60 and 11,347,445.12 is: 15,659,484.28
Step by Step Solution
- Step 1: Write the proportion equation
20,639,716.94 : 28,482,827.60 = 11,347,445.12 : x - Step 2: Convert to fraction form
20,639,716.94/28,482,827.60 = 11,347,445.12/x - Step 3: Cross multiply
20,639,716.94x = 28,482,827.60 × 11,347,445.12 - Step 4: Simplify right side
20,639,716.94x = 323,207,323,053,421.31 - Step 5: Solve for x
x = 323,207,323,053,421.31/20,639,716.94 - Step 6: Final answer
x = 15,659,484.28
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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.