Finding the Fourth Proportional to 20,526,428.26, 28,175,583.95 and 18,151,280.65
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Solution
The fourth proportional to 20,526,428.26, 28,175,583.95 and 18,151,280.65 is: 24,915,339.65
Step by Step Solution
- Step 1: Write the proportion equation
20,526,428.26 : 28,175,583.95 = 18,151,280.65 : x - Step 2: Convert to fraction form
20,526,428.26/28,175,583.95 = 18,151,280.65/x - Step 3: Cross multiply
20,526,428.26x = 28,175,583.95 × 18,151,280.65 - Step 4: Simplify right side
20,526,428.26x = 511,422,931,710,229.19 - Step 5: Solve for x
x = 511,422,931,710,229.19/20,526,428.26 - Step 6: Final answer
x = 24,915,339.65
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.