Finding the Fourth Proportional to 18,169,005.75, 27,259,413.53 and 12,128,293.05
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Solution
The fourth proportional to 18,169,005.75, 27,259,413.53 and 12,128,293.05 is: 18,196,381.25
Step by Step Solution
- Step 1: Write the proportion equation
18,169,005.75 : 27,259,413.53 = 12,128,293.05 : x - Step 2: Convert to fraction form
18,169,005.75/27,259,413.53 = 12,128,293.05/x - Step 3: Cross multiply
18,169,005.75x = 27,259,413.53 × 12,128,293.05 - Step 4: Simplify right side
18,169,005.75x = 330,610,155,602,333.50 - Step 5: Solve for x
x = 330,610,155,602,333.50/18,169,005.75 - Step 6: Final answer
x = 18,196,381.25
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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.