Finding the Fourth Proportional to 20,779,416.80, 28,675,511.52 and 11,612,057.12
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Solution
The fourth proportional to 20,779,416.80, 28,675,511.52 and 11,612,057.12 is: 16,024,592.07
Step by Step Solution
- Step 1: Write the proportion equation
20,779,416.80 : 28,675,511.52 = 11,612,057.12 : x - Step 2: Convert to fraction form
20,779,416.80/28,675,511.52 = 11,612,057.12/x - Step 3: Cross multiply
20,779,416.80x = 28,675,511.52 × 11,612,057.12 - Step 4: Simplify right side
20,779,416.80x = 332,981,677,715,458 - Step 5: Solve for x
x = 332,981,677,715,458/20,779,416.80 - Step 6: Final answer
x = 16,024,592.07
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1.5x scale
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.