Finding the Fourth Proportional to 18,663,287.20, 27,990,729.60 and 6,696,023.20
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Solution
The fourth proportional to 18,663,287.20, 27,990,729.60 and 6,696,023.20 is: 10,042,527.49
Step by Step Solution
- Step 1: Write the proportion equation
18,663,287.20 : 27,990,729.60 = 6,696,023.20 : x - Step 2: Convert to fraction form
18,663,287.20/27,990,729.60 = 6,696,023.20/x - Step 3: Cross multiply
18,663,287.20x = 27,990,729.60 × 6,696,023.20 - Step 4: Simplify right side
18,663,287.20x = 187,426,574,786,526.75 - Step 5: Solve for x
x = 187,426,574,786,526.75/18,663,287.20 - Step 6: Final answer
x = 10,042,527.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.