Finding the Fourth Proportional to 20,438,914.68, 28,204,751.88 and 11,730,957.84
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Solution
The fourth proportional to 20,438,914.68, 28,204,751.88 and 11,730,957.84 is: 16,188,176.35
Step by Step Solution
- Step 1: Write the proportion equation
20,438,914.68 : 28,204,751.88 = 11,730,957.84 : x - Step 2: Convert to fraction form
20,438,914.68/28,204,751.88 = 11,730,957.84/x - Step 3: Cross multiply
20,438,914.68x = 28,204,751.88 × 11,730,957.84 - Step 4: Simplify right side
20,438,914.68x = 330,868,755,191,940.75 - Step 5: Solve for x
x = 330,868,755,191,940.75/20,438,914.68 - Step 6: Final answer
x = 16,188,176.35
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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.