Finding the Fourth Proportional to 21,409,207.12, 29,537,514.70 and 13,678,774.48
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Solution
The fourth proportional to 21,409,207.12, 29,537,514.70 and 13,678,774.48 is: 18,872,114.23
Step by Step Solution
- Step 1: Write the proportion equation
21,409,207.12 : 29,537,514.70 = 13,678,774.48 : x - Step 2: Convert to fraction form
21,409,207.12/29,537,514.70 = 13,678,774.48/x - Step 3: Cross multiply
21,409,207.12x = 29,537,514.70 × 13,678,774.48 - Step 4: Simplify right side
21,409,207.12x = 404,037,002,280,984.88 - Step 5: Solve for x
x = 404,037,002,280,984.88/21,409,207.12 - Step 6: Final answer
x = 18,872,114.23
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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.