Finding the Fourth Proportional to 19,675,231.20, 29,512,846.80 and 18,163,576.80
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Solution
The fourth proportional to 19,675,231.20, 29,512,846.80 and 18,163,576.80 is: 27,245,365.20
Step by Step Solution
- Step 1: Write the proportion equation
19,675,231.20 : 29,512,846.80 = 18,163,576.80 : x - Step 2: Convert to fraction form
19,675,231.20/29,512,846.80 = 18,163,576.80/x - Step 3: Cross multiply
19,675,231.20x = 29,512,846.80 × 18,163,576.80 - Step 4: Simplify right side
19,675,231.20x = 536,058,859,438,434.25 - Step 5: Solve for x
x = 536,058,859,438,434.25/19,675,231.20 - Step 6: Final answer
x = 27,245,365.20
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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.