Finding the Fourth Proportional to 20,313,986.70, 30,453,043.45 and 15,542,975.13
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Solution
The fourth proportional to 20,313,986.70, 30,453,043.45 and 15,542,975.13 is: 23,300,738.75
Step by Step Solution
- Step 1: Write the proportion equation
20,313,986.70 : 30,453,043.45 = 15,542,975.13 : x - Step 2: Convert to fraction form
20,313,986.70/30,453,043.45 = 15,542,975.13/x - Step 3: Cross multiply
20,313,986.70x = 30,453,043.45 × 15,542,975.13 - Step 4: Simplify right side
20,313,986.70x = 473,330,896,976,159.44 - Step 5: Solve for x
x = 473,330,896,976,159.44/20,313,986.70 - Step 6: Final answer
x = 23,300,738.75
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.