Finding the Fourth Proportional to 13,310,043.70, 18,367,860.14 and 7,198,472.20
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Solution
The fourth proportional to 13,310,043.70, 18,367,860.14 and 7,198,472.20 is: 9,933,891.55
Step by Step Solution
- Step 1: Write the proportion equation
13,310,043.70 : 18,367,860.14 = 7,198,472.20 : x - Step 2: Convert to fraction form
13,310,043.70/18,367,860.14 = 7,198,472.20/x - Step 3: Cross multiply
13,310,043.70x = 18,367,860.14 × 7,198,472.20 - Step 4: Simplify right side
13,310,043.70x = 132,220,530,591,278.11 - Step 5: Solve for x
x = 132,220,530,591,278.11/13,310,043.70 - Step 6: Final answer
x = 9,933,891.55
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1.5x scale
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.