Finding the Fourth Proportional to 20,427,877.47, 28,190,241.39 and 11,135,244.08
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Solution
The fourth proportional to 20,427,877.47, 28,190,241.39 and 11,135,244.08 is: 15,366,511.71
Step by Step Solution
- Step 1: Write the proportion equation
20,427,877.47 : 28,190,241.39 = 11,135,244.08 : x - Step 2: Convert to fraction form
20,427,877.47/28,190,241.39 = 11,135,244.08/x - Step 3: Cross multiply
20,427,877.47x = 28,190,241.39 × 11,135,244.08 - Step 4: Simplify right side
20,427,877.47x = 313,905,218,410,817.25 - Step 5: Solve for x
x = 313,905,218,410,817.25/20,427,877.47 - Step 6: Final answer
x = 15,366,511.71
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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.