Finding the Fourth Proportional to 15,335,828.64, 21,162,396.32 and 8,460,425.44
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Solution
The fourth proportional to 15,335,828.64, 21,162,396.32 and 8,460,425.44 is: 11,674,809.39
Step by Step Solution
- Step 1: Write the proportion equation
15,335,828.64 : 21,162,396.32 = 8,460,425.44 : x - Step 2: Convert to fraction form
15,335,828.64/21,162,396.32 = 8,460,425.44/x - Step 3: Cross multiply
15,335,828.64x = 21,162,396.32 × 8,460,425.44 - Step 4: Simplify right side
15,335,828.64x = 179,042,876,197,090.38 - Step 5: Solve for x
x = 179,042,876,197,090.38/15,335,828.64 - Step 6: Final answer
x = 11,674,809.39
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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.