Finding the Fourth Proportional to 20,943,915.80, 31,415,873.70 and 5,797,847.30
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Solution
The fourth proportional to 20,943,915.80, 31,415,873.70 and 5,797,847.30 is: 8,696,770.95
Step by Step Solution
- Step 1: Write the proportion equation
20,943,915.80 : 31,415,873.70 = 5,797,847.30 : x - Step 2: Convert to fraction form
20,943,915.80/31,415,873.70 = 5,797,847.30/x - Step 3: Cross multiply
20,943,915.80x = 31,415,873.70 × 5,797,847.30 - Step 4: Simplify right side
20,943,915.80x = 182,144,438,508,686 - Step 5: Solve for x
x = 182,144,438,508,686/20,943,915.80 - Step 6: Final answer
x = 8,696,770.95
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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.