Finding the Fourth Proportional to 28,685,624.14, 39,585,006.44 and 15,632,602.80
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Solution
The fourth proportional to 28,685,624.14, 39,585,006.44 and 15,632,602.80 is: 21,572,362.50
Step by Step Solution
- Step 1: Write the proportion equation
28,685,624.14 : 39,585,006.44 = 15,632,602.80 : x - Step 2: Convert to fraction form
28,685,624.14/39,585,006.44 = 15,632,602.80/x - Step 3: Cross multiply
28,685,624.14x = 39,585,006.44 × 15,632,602.80 - Step 4: Simplify right side
28,685,624.14x = 618,816,682,511,962 - Step 5: Solve for x
x = 618,816,682,511,962/28,685,624.14 - Step 6: Final answer
x = 21,572,362.50
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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.