Finding the Fourth Proportional to 21,709,482.42, 29,959,514.20 and 11,919,840.96
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Solution
The fourth proportional to 21,709,482.42, 29,959,514.20 and 11,919,840.96 is: 16,449,615.78
Step by Step Solution
- Step 1: Write the proportion equation
21,709,482.42 : 29,959,514.20 = 11,919,840.96 : x - Step 2: Convert to fraction form
21,709,482.42/29,959,514.20 = 11,919,840.96/x - Step 3: Cross multiply
21,709,482.42x = 29,959,514.20 × 11,919,840.96 - Step 4: Simplify right side
21,709,482.42x = 357,112,644,502,861.62 - Step 5: Solve for x
x = 357,112,644,502,861.62/21,709,482.42 - Step 6: Final answer
x = 16,449,615.78
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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.