Finding the Fourth Proportional to 19,761,469.36, 27,273,691.72 and 11,387,209.84
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Solution
The fourth proportional to 19,761,469.36, 27,273,691.72 and 11,387,209.84 is: 15,715,999.91
Step by Step Solution
- Step 1: Write the proportion equation
19,761,469.36 : 27,273,691.72 = 11,387,209.84 : x - Step 2: Convert to fraction form
19,761,469.36/27,273,691.72 = 11,387,209.84/x - Step 3: Cross multiply
19,761,469.36x = 27,273,691.72 × 11,387,209.84 - Step 4: Simplify right side
19,761,469.36x = 310,571,250,738,358.69 - Step 5: Solve for x
x = 310,571,250,738,358.69/19,761,469.36 - Step 6: Final answer
x = 15,715,999.91
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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.