Finding the Fourth Proportional to 18,990,135.76, 26,206,393.44 and 10,288,368.40
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Solution
The fourth proportional to 18,990,135.76, 26,206,393.44 and 10,288,368.40 is: 14,197,951.69
Step by Step Solution
- Step 1: Write the proportion equation
18,990,135.76 : 26,206,393.44 = 10,288,368.40 : x - Step 2: Convert to fraction form
18,990,135.76/26,206,393.44 = 10,288,368.40/x - Step 3: Cross multiply
18,990,135.76x = 26,206,393.44 × 10,288,368.40 - Step 4: Simplify right side
18,990,135.76x = 269,621,030,146,063.31 - Step 5: Solve for x
x = 269,621,030,146,063.31/18,990,135.76 - Step 6: Final answer
x = 14,197,951.69
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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.