Finding the Fourth Proportional to 18,312,859.81, 27,469,009.85 and 6,190,838.22
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Solution
The fourth proportional to 18,312,859.81, 27,469,009.85 and 6,190,838.22 is: 9,286,162.72
Step by Step Solution
- Step 1: Write the proportion equation
18,312,859.81 : 27,469,009.85 = 6,190,838.22 : x - Step 2: Convert to fraction form
18,312,859.81/27,469,009.85 = 6,190,838.22/x - Step 3: Cross multiply
18,312,859.81x = 27,469,009.85 × 6,190,838.22 - Step 4: Simplify right side
18,312,859.81x = 170,056,196,013,982.25 - Step 5: Solve for x
x = 170,056,196,013,982.25/18,312,859.81 - Step 6: Final answer
x = 9,286,162.72
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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.