Finding the Fourth Proportional to 19,809,674.81, 27,305,758.29 and 15,616,523.31
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Solution
The fourth proportional to 19,809,674.81, 27,305,758.29 and 15,616,523.31 is: 21,525,896.56
Step by Step Solution
- Step 1: Write the proportion equation
19,809,674.81 : 27,305,758.29 = 15,616,523.31 : x - Step 2: Convert to fraction form
19,809,674.81/27,305,758.29 = 15,616,523.31/x - Step 3: Cross multiply
19,809,674.81x = 27,305,758.29 × 15,616,523.31 - Step 4: Simplify right side
19,809,674.81x = 426,421,010,833,010.75 - Step 5: Solve for x
x = 426,421,010,833,010.75/19,809,674.81 - Step 6: Final answer
x = 21,525,896.56
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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.