Finding the Fourth Proportional to 15,313,830.27, 21,133,536.56 and 8,438,755.20
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Solution
The fourth proportional to 15,313,830.27, 21,133,536.56 and 8,438,755.20 is: 11,645,730.58
Step by Step Solution
- Step 1: Write the proportion equation
15,313,830.27 : 21,133,536.56 = 8,438,755.20 : x - Step 2: Convert to fraction form
15,313,830.27/21,133,536.56 = 8,438,755.20/x - Step 3: Cross multiply
15,313,830.27x = 21,133,536.56 × 8,438,755.20 - Step 4: Simplify right side
15,313,830.27x = 178,340,741,540,090.09 - Step 5: Solve for x
x = 178,340,741,540,090.09/15,313,830.27 - Step 6: Final answer
x = 11,645,730.58
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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.