Finding the Fourth Proportional to 20,428,617.79, 28,190,473.71 and 11,606,903.84
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Solution
The fourth proportional to 20,428,617.79, 28,190,473.71 and 11,606,903.84 is: 16,016,948.43
Step by Step Solution
- Step 1: Write the proportion equation
20,428,617.79 : 28,190,473.71 = 11,606,903.84 : x - Step 2: Convert to fraction form
20,428,617.79/28,190,473.71 = 11,606,903.84/x - Step 3: Cross multiply
20,428,617.79x = 28,190,473.71 × 11,606,903.84 - Step 4: Simplify right side
20,428,617.79x = 327,204,117,582,968.31 - Step 5: Solve for x
x = 327,204,117,582,968.31/20,428,617.79 - Step 6: Final answer
x = 16,016,948.43
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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.