Finding the Fourth Proportional to 21,491,258.20, 32,236,887.30 and 19,507,211.80
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Solution
The fourth proportional to 21,491,258.20, 32,236,887.30 and 19,507,211.80 is: 29,260,817.70
Step by Step Solution
- Step 1: Write the proportion equation
21,491,258.20 : 32,236,887.30 = 19,507,211.80 : x - Step 2: Convert to fraction form
21,491,258.20/32,236,887.30 = 19,507,211.80/x - Step 3: Cross multiply
21,491,258.20x = 32,236,887.30 × 19,507,211.80 - Step 4: Simplify right side
21,491,258.20x = 628,851,788,333,830.12 - Step 5: Solve for x
x = 628,851,788,333,830.12/21,491,258.20 - Step 6: Final answer
x = 29,260,817.70
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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.