Finding the Fourth Proportional to 19,729,768.65, 27,227,071.12 and 11,581,006.65
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Solution
The fourth proportional to 19,729,768.65, 27,227,071.12 and 11,581,006.65 is: 15,981,783.53
Step by Step Solution
- Step 1: Write the proportion equation
19,729,768.65 : 27,227,071.12 = 11,581,006.65 : x - Step 2: Convert to fraction form
19,729,768.65/27,227,071.12 = 11,581,006.65/x - Step 3: Cross multiply
19,729,768.65x = 27,227,071.12 × 11,581,006.65 - Step 4: Simplify right side
19,729,768.65x = 315,316,891,700,743 - Step 5: Solve for x
x = 315,316,891,700,743/19,729,768.65 - Step 6: Final answer
x = 15,981,783.53
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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.