Finding the Fourth Proportional to 21,629,646.84, 29,846,871.18 and 12,926,086.68
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Solution
The fourth proportional to 21,629,646.84, 29,846,871.18 and 12,926,086.68 is: 17,836,779.62
Step by Step Solution
- Step 1: Write the proportion equation
21,629,646.84 : 29,846,871.18 = 12,926,086.68 : x - Step 2: Convert to fraction form
21,629,646.84/29,846,871.18 = 12,926,086.68/x - Step 3: Cross multiply
21,629,646.84x = 29,846,871.18 × 12,926,086.68 - Step 4: Simplify right side
21,629,646.84x = 385,803,243,999,473.88 - Step 5: Solve for x
x = 385,803,243,999,473.88/21,629,646.84 - Step 6: Final answer
x = 17,836,779.62
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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.