Finding the Fourth Proportional to 13,420,453.70, 18,520,750.44 and 7,619,775.19
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Solution
The fourth proportional to 13,420,453.70, 18,520,750.44 and 7,619,775.19 is: 10,515,587.46
Step by Step Solution
- Step 1: Write the proportion equation
13,420,453.70 : 18,520,750.44 = 7,619,775.19 : x - Step 2: Convert to fraction form
13,420,453.70/18,520,750.44 = 7,619,775.19/x - Step 3: Cross multiply
13,420,453.70x = 18,520,750.44 × 7,619,775.19 - Step 4: Simplify right side
13,420,453.70x = 141,123,954,656,591.72 - Step 5: Solve for x
x = 141,123,954,656,591.72/13,420,453.70 - Step 6: Final answer
x = 10,515,587.46
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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.