Finding the Fourth Proportional to 20,717,805.92, 28,596,086.16 and 12,238,374.08
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Solution
The fourth proportional to 20,717,805.92, 28,596,086.16 and 12,238,374.08 is: 16,892,213.44
Step by Step Solution
- Step 1: Write the proportion equation
20,717,805.92 : 28,596,086.16 = 12,238,374.08 : x - Step 2: Convert to fraction form
20,717,805.92/28,596,086.16 = 12,238,374.08/x - Step 3: Cross multiply
20,717,805.92x = 28,596,086.16 × 12,238,374.08 - Step 4: Simplify right side
20,717,805.92x = 349,969,599,649,990.75 - Step 5: Solve for x
x = 349,969,599,649,990.75/20,717,805.92 - Step 6: Final answer
x = 16,892,213.44
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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.