Finding the Fourth Proportional to 18,902,491.49, 28,312,257.94 and 15,626,905.49
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Solution
The fourth proportional to 18,902,491.49, 28,312,257.94 and 15,626,905.49 is: 23,406,066.82
Step by Step Solution
- Step 1: Write the proportion equation
18,902,491.49 : 28,312,257.94 = 15,626,905.49 : x - Step 2: Convert to fraction form
18,902,491.49/28,312,257.94 = 15,626,905.49/x - Step 3: Cross multiply
18,902,491.49x = 28,312,257.94 × 15,626,905.49 - Step 4: Simplify right side
18,902,491.49x = 442,432,978,856,253.50 - Step 5: Solve for x
x = 442,432,978,856,253.50/18,902,491.49 - Step 6: Final answer
x = 23,406,066.82
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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.