Finding the Fourth Proportional to 20,343,170.28, 28,073,972.46 and 11,176,160.52
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Solution
The fourth proportional to 20,343,170.28, 28,073,972.46 and 11,176,160.52 is: 15,423,319.88
Step by Step Solution
- Step 1: Write the proportion equation
20,343,170.28 : 28,073,972.46 = 11,176,160.52 : x - Step 2: Convert to fraction form
20,343,170.28/28,073,972.46 = 11,176,160.52/x - Step 3: Cross multiply
20,343,170.28x = 28,073,972.46 × 11,176,160.52 - Step 4: Simplify right side
20,343,170.28x = 313,759,222,647,019.25 - Step 5: Solve for x
x = 313,759,222,647,019.25/20,343,170.28 - Step 6: Final answer
x = 15,423,319.88
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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.