Finding the Fourth Proportional to 13,447,632.49, 18,557,646.21 and 7,646,413.77
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Solution
The fourth proportional to 13,447,632.49, 18,557,646.21 and 7,646,413.77 is: 10,552,001.75
Step by Step Solution
- Step 1: Write the proportion equation
13,447,632.49 : 18,557,646.21 = 7,646,413.77 : x - Step 2: Convert to fraction form
13,447,632.49/18,557,646.21 = 7,646,413.77/x - Step 3: Cross multiply
13,447,632.49x = 18,557,646.21 × 7,646,413.77 - Step 4: Simplify right side
13,447,632.49x = 141,899,441,518,932.31 - Step 5: Solve for x
x = 141,899,441,518,932.31/13,447,632.49 - Step 6: Final answer
x = 10,552,001.75
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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.