Finding the Fourth Proportional to 20,851,244.20, 31,254,056.70 and 7,381,138.60
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Solution
The fourth proportional to 20,851,244.20, 31,254,056.70 and 7,381,138.60 is: 11,063,633.52
Step by Step Solution
- Step 1: Write the proportion equation
20,851,244.20 : 31,254,056.70 = 7,381,138.60 : x - Step 2: Convert to fraction form
20,851,244.20/31,254,056.70 = 7,381,138.60/x - Step 3: Cross multiply
20,851,244.20x = 31,254,056.70 × 7,381,138.60 - Step 4: Simplify right side
20,851,244.20x = 230,690,524,314,958.59 - Step 5: Solve for x
x = 230,690,524,314,958.59/20,851,244.20 - Step 6: Final answer
x = 11,063,633.52
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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.