Finding the Fourth Proportional to 28,828,644.85, 39,783,529.38 and 15,775,908.09
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Solution
The fourth proportional to 28,828,644.85, 39,783,529.38 and 15,775,908.09 is: 21,770,752.88
Step by Step Solution
- Step 1: Write the proportion equation
28,828,644.85 : 39,783,529.38 = 15,775,908.09 : x - Step 2: Convert to fraction form
28,828,644.85/39,783,529.38 = 15,775,908.09/x - Step 3: Cross multiply
28,828,644.85x = 39,783,529.38 × 15,775,908.09 - Step 4: Simplify right side
28,828,644.85x = 627,621,302,994,694.75 - Step 5: Solve for x
x = 627,621,302,994,694.75/28,828,644.85 - Step 6: Final answer
x = 21,770,752.88
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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.