Finding the Fourth Proportional to 15,059,933.30, 20,781,912.56 and 8,533,640.99
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Solution
The fourth proportional to 15,059,933.30, 20,781,912.56 and 8,533,640.99 is: 11,775,973.85
Step by Step Solution
- Step 1: Write the proportion equation
15,059,933.30 : 20,781,912.56 = 8,533,640.99 : x - Step 2: Convert to fraction form
15,059,933.30/20,781,912.56 = 8,533,640.99/x - Step 3: Cross multiply
15,059,933.30x = 20,781,912.56 × 8,533,640.99 - Step 4: Simplify right side
15,059,933.30x = 177,345,380,726,034.06 - Step 5: Solve for x
x = 177,345,380,726,034.06/15,059,933.30 - Step 6: Final answer
x = 11,775,973.85
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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.