Finding the Fourth Proportional to 20,372,997.58, 28,106,439.84 and 11,550,590.98
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Solution
The fourth proportional to 20,372,997.58, 28,106,439.84 and 11,550,590.98 is: 15,935,111.62
Step by Step Solution
- Step 1: Write the proportion equation
20,372,997.58 : 28,106,439.84 = 11,550,590.98 : x - Step 2: Convert to fraction form
20,372,997.58/28,106,439.84 = 11,550,590.98/x - Step 3: Cross multiply
20,372,997.58x = 28,106,439.84 × 11,550,590.98 - Step 4: Simplify right side
20,372,997.58x = 324,645,990,495,816.62 - Step 5: Solve for x
x = 324,645,990,495,816.62/20,372,997.58 - Step 6: Final answer
x = 15,935,111.62
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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.