Finding the Fourth Proportional to 15,790,376.09, 21,789,502.84 and 8,915,536.73
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Solution
The fourth proportional to 15,790,376.09, 21,789,502.84 and 8,915,536.73 is: 12,302,754.02
Step by Step Solution
- Step 1: Write the proportion equation
15,790,376.09 : 21,789,502.84 = 8,915,536.73 : x - Step 2: Convert to fraction form
15,790,376.09/21,789,502.84 = 8,915,536.73/x - Step 3: Cross multiply
15,790,376.09x = 21,789,502.84 × 8,915,536.73 - Step 4: Simplify right side
15,790,376.09x = 194,265,112,964,077.47 - Step 5: Solve for x
x = 194,265,112,964,077.47/15,790,376.09 - Step 6: Final answer
x = 12,302,754.02
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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.