Finding the Fourth Proportional to 21,438,413.28, 32,160,885.84 and 13,344,841.44
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Solution
The fourth proportional to 21,438,413.28, 32,160,885.84 and 13,344,841.44 is: 20,019,295.11
Step by Step Solution
- Step 1: Write the proportion equation
21,438,413.28 : 32,160,885.84 = 13,344,841.44 : x - Step 2: Convert to fraction form
21,438,413.28/32,160,885.84 = 13,344,841.44/x - Step 3: Cross multiply
21,438,413.28x = 32,160,885.84 × 13,344,841.44 - Step 4: Simplify right side
21,438,413.28x = 429,181,922,104,741.19 - Step 5: Solve for x
x = 429,181,922,104,741.19/21,438,413.28 - Step 6: Final answer
x = 20,019,295.11
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.