Finding the Fourth Proportional to 21,246,470.70, 31,869,706.05 and 19,475,000.70
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Solution
The fourth proportional to 21,246,470.70, 31,869,706.05 and 19,475,000.70 is: 29,212,501.05
Step by Step Solution
- Step 1: Write the proportion equation
21,246,470.70 : 31,869,706.05 = 19,475,000.70 : x - Step 2: Convert to fraction form
21,246,470.70/31,869,706.05 = 19,475,000.70/x - Step 3: Cross multiply
21,246,470.70x = 31,869,706.05 × 19,475,000.70 - Step 4: Simplify right side
21,246,470.70x = 620,662,547,632,544.25 - Step 5: Solve for x
x = 620,662,547,632,544.25/21,246,470.70 - Step 6: Final answer
x = 29,212,501.05
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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.