Finding the Fourth Proportional to 21,668,702.46, 29,902,618.35 and 11,878,968.66
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Solution
The fourth proportional to 21,668,702.46, 29,902,618.35 and 11,878,968.66 is: 16,392,872.02
Step by Step Solution
- Step 1: Write the proportion equation
21,668,702.46 : 29,902,618.35 = 11,878,968.66 : x - Step 2: Convert to fraction form
21,668,702.46/29,902,618.35 = 11,878,968.66/x - Step 3: Cross multiply
21,668,702.46x = 29,902,618.35 × 11,878,968.66 - Step 4: Simplify right side
21,668,702.46x = 355,212,266,231,590.94 - Step 5: Solve for x
x = 355,212,266,231,590.94/21,668,702.46 - Step 6: Final answer
x = 16,392,872.02
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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.