Finding the Fourth Proportional to 19,877,611.20, 29,798,920.80 and 13,467,076.80
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Solution
The fourth proportional to 19,877,611.20, 29,798,920.80 and 13,467,076.80 is: 20,188,761.66
Step by Step Solution
- Step 1: Write the proportion equation
19,877,611.20 : 29,798,920.80 = 13,467,076.80 : x - Step 2: Convert to fraction form
19,877,611.20/29,798,920.80 = 13,467,076.80/x - Step 3: Cross multiply
19,877,611.20x = 29,798,920.80 × 13,467,076.80 - Step 4: Simplify right side
19,877,611.20x = 401,304,354,970,717.50 - Step 5: Solve for x
x = 401,304,354,970,717.50/19,877,611.20 - Step 6: Final answer
x = 20,188,761.66
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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.