Finding the Fourth Proportional to 19,857,636.81, 27,403,376.09 and 11,155,626.18
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Solution
The fourth proportional to 19,857,636.81, 27,403,376.09 and 11,155,626.18 is: 15,394,672.72
Step by Step Solution
- Step 1: Write the proportion equation
19,857,636.81 : 27,403,376.09 = 11,155,626.18 : x - Step 2: Convert to fraction form
19,857,636.81/27,403,376.09 = 11,155,626.18/x - Step 3: Cross multiply
19,857,636.81x = 27,403,376.09 × 11,155,626.18 - Step 4: Simplify right side
19,857,636.81x = 305,701,819,674,211.94 - Step 5: Solve for x
x = 305,701,819,674,211.94/19,857,636.81 - Step 6: Final answer
x = 15,394,672.72
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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.