Finding the Fourth Proportional to 15,726,966.48, 21,703,912.20 and 8,851,893.84
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Solution
The fourth proportional to 15,726,966.48, 21,703,912.20 and 8,851,893.84 is: 12,216,006.62
Step by Step Solution
- Step 1: Write the proportion equation
15,726,966.48 : 21,703,912.20 = 8,851,893.84 : x - Step 2: Convert to fraction form
15,726,966.48/21,703,912.20 = 8,851,893.84/x - Step 3: Cross multiply
15,726,966.48x = 21,703,912.20 × 8,851,893.84 - Step 4: Simplify right side
15,726,966.48x = 192,120,726,707,080.84 - Step 5: Solve for x
x = 192,120,726,707,080.84/15,726,966.48 - Step 6: Final answer
x = 12,216,006.62
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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.