Finding the Fourth Proportional to 18,720,034.70, 28,080,052.05 and 15,696,725.90
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Solution
The fourth proportional to 18,720,034.70, 28,080,052.05 and 15,696,725.90 is: 23,545,088.85
Step by Step Solution
- Step 1: Write the proportion equation
18,720,034.70 : 28,080,052.05 = 15,696,725.90 : x - Step 2: Convert to fraction form
18,720,034.70/28,080,052.05 = 15,696,725.90/x - Step 3: Cross multiply
18,720,034.70x = 28,080,052.05 × 15,696,725.90 - Step 4: Simplify right side
18,720,034.70x = 440,764,880,286,583.12 - Step 5: Solve for x
x = 440,764,880,286,583.12/18,720,034.70 - Step 6: Final answer
x = 23,545,088.85
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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.