Finding the Fourth Proportional to 21,186,218.80, 31,779,328.20 and 16,403,249.80
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Solution
The fourth proportional to 21,186,218.80, 31,779,328.20 and 16,403,249.80 is: 24,604,874.70
Step by Step Solution
- Step 1: Write the proportion equation
21,186,218.80 : 31,779,328.20 = 16,403,249.80 : x - Step 2: Convert to fraction form
21,186,218.80/31,779,328.20 = 16,403,249.80/x - Step 3: Cross multiply
21,186,218.80x = 31,779,328.20 × 16,403,249.80 - Step 4: Simplify right side
21,186,218.80x = 521,284,258,940,784.38 - Step 5: Solve for x
x = 521,284,258,940,784.38/21,186,218.80 - Step 6: Final answer
x = 24,604,874.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.