Finding the Fourth Proportional to 19,589,276.80, 29,383,915.20 and 13,542,659.20
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Solution
The fourth proportional to 19,589,276.80, 29,383,915.20 and 13,542,659.20 is: 20,313,988.80
Step by Step Solution
- Step 1: Write the proportion equation
19,589,276.80 : 29,383,915.20 = 13,542,659.20 : x - Step 2: Convert to fraction form
19,589,276.80/29,383,915.20 = 13,542,659.20/x - Step 3: Cross multiply
19,589,276.80x = 29,383,915.20 × 13,542,659.20 - Step 4: Simplify right side
19,589,276.80x = 397,936,349,515,299.81 - Step 5: Solve for x
x = 397,936,349,515,299.81/19,589,276.80 - Step 6: Final answer
x = 20,313,988.80
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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.