Finding the Fourth Proportional to 20,750,988.43, 31,127,617.86 and 8,621,678.26
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Solution
The fourth proportional to 20,750,988.43, 31,127,617.86 and 8,621,678.26 is: 12,932,989.05
Step by Step Solution
- Step 1: Write the proportion equation
20,750,988.43 : 31,127,617.86 = 8,621,678.26 : x - Step 2: Convert to fraction form
20,750,988.43/31,127,617.86 = 8,621,678.26/x - Step 3: Cross multiply
20,750,988.43x = 31,127,617.86 × 8,621,678.26 - Step 4: Simplify right side
20,750,988.43x = 268,372,306,189,149.72 - Step 5: Solve for x
x = 268,372,306,189,149.72/20,750,988.43 - Step 6: Final answer
x = 12,932,989.05
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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.