Finding the Fourth Proportional to 15,305,868.21, 21,121,300.97 and 9,504,526.31
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Solution
The fourth proportional to 15,305,868.21, 21,121,300.97 and 9,504,526.31 is: 13,115,751.28
Step by Step Solution
- Step 1: Write the proportion equation
15,305,868.21 : 21,121,300.97 = 9,504,526.31 : x - Step 2: Convert to fraction form
15,305,868.21/21,121,300.97 = 9,504,526.31/x - Step 3: Cross multiply
15,305,868.21x = 21,121,300.97 × 9,504,526.31 - Step 4: Simplify right side
15,305,868.21x = 200,747,960,617,664.38 - Step 5: Solve for x
x = 200,747,960,617,664.38/15,305,868.21 - Step 6: Final answer
x = 13,115,751.28
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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.