Finding the Fourth Proportional to 15,629,635.18, 21,568,875.34 and 8,660,764.09
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Solution
The fourth proportional to 15,629,635.18, 21,568,875.34 and 8,660,764.09 is: 11,951,842.69
Step by Step Solution
- Step 1: Write the proportion equation
15,629,635.18 : 21,568,875.34 = 8,660,764.09 : x - Step 2: Convert to fraction form
15,629,635.18/21,568,875.34 = 8,660,764.09/x - Step 3: Cross multiply
15,629,635.18x = 21,568,875.34 × 8,660,764.09 - Step 4: Simplify right side
15,629,635.18x = 186,802,941,006,358.53 - Step 5: Solve for x
x = 186,802,941,006,358.53/15,629,635.18 - Step 6: Final answer
x = 11,951,842.69
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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.