Finding the Fourth Proportional to 21,121,844.48, 31,686,343.53 and 7,285,046.09
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Solution
The fourth proportional to 21,121,844.48, 31,686,343.53 and 7,285,046.09 is: 10,928,802.79
Step by Step Solution
- Step 1: Write the proportion equation
21,121,844.48 : 31,686,343.53 = 7,285,046.09 : x - Step 2: Convert to fraction form
21,121,844.48/31,686,343.53 = 7,285,046.09/x - Step 3: Cross multiply
21,121,844.48x = 31,686,343.53 × 7,285,046.09 - Step 4: Simplify right side
21,121,844.48x = 230,836,472,853,872.66 - Step 5: Solve for x
x = 230,836,472,853,872.66/21,121,844.48 - Step 6: Final answer
x = 10,928,802.79
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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.