Finding the Fourth Proportional to 18,992,685.56, 26,218,943.01 and 12,724,006.79
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Solution
The fourth proportional to 18,992,685.56, 26,218,943.01 and 12,724,006.79 is: 17,565,183.60
Step by Step Solution
- Step 1: Write the proportion equation
18,992,685.56 : 26,218,943.01 = 12,724,006.79 : x - Step 2: Convert to fraction form
18,992,685.56/26,218,943.01 = 12,724,006.79/x - Step 3: Cross multiply
18,992,685.56x = 26,218,943.01 × 12,724,006.79 - Step 4: Simplify right side
18,992,685.56x = 333,610,008,754,768.38 - Step 5: Solve for x
x = 333,610,008,754,768.38/18,992,685.56 - Step 6: Final answer
x = 17,565,183.60
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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.