Finding the Fourth Proportional to 13,338,696.24, 18,407,413.10 and 7,227,124.74
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Solution
The fourth proportional to 13,338,696.24, 18,407,413.10 and 7,227,124.74 is: 9,973,438.80
Step by Step Solution
- Step 1: Write the proportion equation
13,338,696.24 : 18,407,413.10 = 7,227,124.74 : x - Step 2: Convert to fraction form
13,338,696.24/18,407,413.10 = 7,227,124.74/x - Step 3: Cross multiply
13,338,696.24x = 18,407,413.10 × 7,227,124.74 - Step 4: Simplify right side
13,338,696.24x = 133,032,670,632,477.91 - Step 5: Solve for x
x = 133,032,670,632,477.91/13,338,696.24 - Step 6: Final answer
x = 9,973,438.80
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Double scale
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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.