Finding the Fourth Proportional to 19,639,187.53, 27,105,376.81 and 11,384,413.44
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Solution
The fourth proportional to 19,639,187.53, 27,105,376.81 and 11,384,413.44 is: 15,712,402.33
Step by Step Solution
- Step 1: Write the proportion equation
19,639,187.53 : 27,105,376.81 = 11,384,413.44 : x - Step 2: Convert to fraction form
19,639,187.53/27,105,376.81 = 11,384,413.44/x - Step 3: Cross multiply
19,639,187.53x = 27,105,376.81 × 11,384,413.44 - Step 4: Simplify right side
19,639,187.53x = 308,578,815,995,106.25 - Step 5: Solve for x
x = 308,578,815,995,106.25/19,639,187.53 - Step 6: Final answer
x = 15,712,402.33
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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.