Finding the Fourth Proportional to 20,728,106.81, 31,091,038.68 and 6,351,216.23
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Solution
The fourth proportional to 20,728,106.81, 31,091,038.68 and 6,351,216.23 is: 9,526,480.70
Step by Step Solution
- Step 1: Write the proportion equation
20,728,106.81 : 31,091,038.68 = 6,351,216.23 : x - Step 2: Convert to fraction form
20,728,106.81/31,091,038.68 = 6,351,216.23/x - Step 3: Cross multiply
20,728,106.81x = 31,091,038.68 × 6,351,216.23 - Step 4: Simplify right side
20,728,106.81x = 197,465,909,456,927.03 - Step 5: Solve for x
x = 197,465,909,456,927.03/20,728,106.81 - Step 6: Final answer
x = 9,526,480.70
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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.