Finding the Fourth Proportional to 13,418,811.51, 18,517,470.98 and 7,307,105.91
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Solution
The fourth proportional to 13,418,811.51, 18,517,470.98 and 7,307,105.91 is: 10,083,539.92
Step by Step Solution
- Step 1: Write the proportion equation
13,418,811.51 : 18,517,470.98 = 7,307,105.91 : x - Step 2: Convert to fraction form
13,418,811.51/18,517,470.98 = 7,307,105.91/x - Step 3: Cross multiply
13,418,811.51x = 18,517,470.98 × 7,307,105.91 - Step 4: Simplify right side
13,418,811.51x = 135,309,121,599,675.97 - Step 5: Solve for x
x = 135,309,121,599,675.97/13,418,811.51 - Step 6: Final answer
x = 10,083,539.92
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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.