Finding the Fourth Proportional to 13,392,975.40, 18,486,239.46 and 8,747,470.62
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Solution
The fourth proportional to 13,392,975.40, 18,486,239.46 and 8,747,470.62 is: 12,074,078.52
Step by Step Solution
- Step 1: Write the proportion equation
13,392,975.40 : 18,486,239.46 = 8,747,470.62 : x - Step 2: Convert to fraction form
13,392,975.40/18,486,239.46 = 8,747,470.62/x - Step 3: Cross multiply
13,392,975.40x = 18,486,239.46 × 8,747,470.62 - Step 4: Simplify right side
13,392,975.40x = 161,707,836,550,634.66 - Step 5: Solve for x
x = 161,707,836,550,634.66/13,392,975.40 - Step 6: Final answer
x = 12,074,078.52
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1.5x scale
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.