Finding the Fourth Proportional to 20,786,654.80, 31,163,393.40 and 8,809,541.20
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Solution
The fourth proportional to 20,786,654.80, 31,163,393.40 and 8,809,541.20 is: 13,207,281.34
Step by Step Solution
- Step 1: Write the proportion equation
20,786,654.80 : 31,163,393.40 = 8,809,541.20 : x - Step 2: Convert to fraction form
20,786,654.80/31,163,393.40 = 8,809,541.20/x - Step 3: Cross multiply
20,786,654.80x = 31,163,393.40 × 8,809,541.20 - Step 4: Simplify right side
20,786,654.80x = 274,535,198,089,108.03 - Step 5: Solve for x
x = 274,535,198,089,108.03/20,786,654.80 - Step 6: Final answer
x = 13,207,281.34
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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.