Finding the Fourth Proportional to 20,683,633.83, 28,546,517.84 and 15,713,897.19
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Solution
The fourth proportional to 20,683,633.83, 28,546,517.84 and 15,713,897.19 is: 21,687,535.67
Step by Step Solution
- Step 1: Write the proportion equation
20,683,633.83 : 28,546,517.84 = 15,713,897.19 : x - Step 2: Convert to fraction form
20,683,633.83/28,546,517.84 = 15,713,897.19/x - Step 3: Cross multiply
20,683,633.83x = 28,546,517.84 × 15,713,897.19 - Step 4: Simplify right side
20,683,633.83x = 448,577,046,470,260.88 - Step 5: Solve for x
x = 448,577,046,470,260.88/20,683,633.83 - Step 6: Final answer
x = 21,687,535.67
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.