Finding the Fourth Proportional to 18,571,331.70, 27,856,997.55 and 14,319,803.70
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Solution
The fourth proportional to 18,571,331.70, 27,856,997.55 and 14,319,803.70 is: 21,479,705.55
Step by Step Solution
- Step 1: Write the proportion equation
18,571,331.70 : 27,856,997.55 = 14,319,803.70 : x - Step 2: Convert to fraction form
18,571,331.70/27,856,997.55 = 14,319,803.70/x - Step 3: Cross multiply
18,571,331.70x = 27,856,997.55 × 14,319,803.70 - Step 4: Simplify right side
18,571,331.70x = 398,906,736,587,380.94 - Step 5: Solve for x
x = 398,906,736,587,380.94/18,571,331.70 - Step 6: Final answer
x = 21,479,705.55
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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.