Finding the Fourth Proportional to 20,670,086.99, 30,984,287.91 and 12,999,213.99
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Solution
The fourth proportional to 20,670,086.99, 30,984,287.91 and 12,999,213.99 is: 19,485,713.29
Step by Step Solution
- Step 1: Write the proportion equation
20,670,086.99 : 30,984,287.91 = 12,999,213.99 : x - Step 2: Convert to fraction form
20,670,086.99/30,984,287.91 = 12,999,213.99/x - Step 3: Cross multiply
20,670,086.99x = 30,984,287.91 × 12,999,213.99 - Step 4: Simplify right side
20,670,086.99x = 402,771,388,821,112.81 - Step 5: Solve for x
x = 402,771,388,821,112.81/20,670,086.99 - Step 6: Final answer
x = 19,485,713.29
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.