Finding the Fourth Proportional to 21,296,984.88, 29,389,848.12 and 11,639,192.88
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Solution
The fourth proportional to 21,296,984.88, 29,389,848.12 and 11,639,192.88 is: 16,062,091.09
Step by Step Solution
- Step 1: Write the proportion equation
21,296,984.88 : 29,389,848.12 = 11,639,192.88 : x - Step 2: Convert to fraction form
21,296,984.88/29,389,848.12 = 11,639,192.88/x - Step 3: Cross multiply
21,296,984.88x = 29,389,848.12 × 11,639,192.88 - Step 4: Simplify right side
21,296,984.88x = 342,074,110,982,585.44 - Step 5: Solve for x
x = 342,074,110,982,585.44/21,296,984.88 - Step 6: Final answer
x = 16,062,091.09
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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.