Finding the Fourth Proportional to 12,221,611.10, 18,346,413.45 and 7,175,764.70
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Solution
The fourth proportional to 12,221,611.10, 18,346,413.45 and 7,175,764.70 is: 10,771,865.09
Step by Step Solution
- Step 1: Write the proportion equation
12,221,611.10 : 18,346,413.45 = 7,175,764.70 : x - Step 2: Convert to fraction form
12,221,611.10/18,346,413.45 = 7,175,764.70/x - Step 3: Cross multiply
12,221,611.10x = 18,346,413.45 × 7,175,764.70 - Step 4: Simplify right side
12,221,611.10x = 131,649,546,006,115.22 - Step 5: Solve for x
x = 131,649,546,006,115.22/12,221,611.10 - Step 6: Final answer
x = 10,771,865.09
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1.5x scale
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.