Finding the Fourth Proportional to 28,738,618.96, 39,711,171.68 and 20,464,316.24
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Solution
The fourth proportional to 28,738,618.96, 39,711,171.68 and 20,464,316.24 is: 28,277,697.57
Step by Step Solution
- Step 1: Write the proportion equation
28,738,618.96 : 39,711,171.68 = 20,464,316.24 : x - Step 2: Convert to fraction form
28,738,618.96/39,711,171.68 = 20,464,316.24/x - Step 3: Cross multiply
28,738,618.96x = 39,711,171.68 × 20,464,316.24 - Step 4: Simplify right side
28,738,618.96x = 812,661,975,520,452 - Step 5: Solve for x
x = 812,661,975,520,452/28,738,618.96 - Step 6: Final answer
x = 28,277,697.57
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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.