Finding the Fourth Proportional to 11,431,042.76, 15,787,931.19 and 7,528,245.23
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Solution
The fourth proportional to 11,431,042.76, 15,787,931.19 and 7,528,245.23 is: 10,397,600.65
Step by Step Solution
- Step 1: Write the proportion equation
11,431,042.76 : 15,787,931.19 = 7,528,245.23 : x - Step 2: Convert to fraction form
11,431,042.76/15,787,931.19 = 7,528,245.23/x - Step 3: Cross multiply
11,431,042.76x = 15,787,931.19 × 7,528,245.23 - Step 4: Simplify right side
11,431,042.76x = 118,855,417,672,685.73 - Step 5: Solve for x
x = 118,855,417,672,685.73/11,431,042.76 - Step 6: Final answer
x = 10,397,600.65
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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.