Finding the Fourth Proportional to 20,236,197.12, 27,927,560.76 and 12,897,324.96
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Solution
The fourth proportional to 20,236,197.12, 27,927,560.76 and 12,897,324.96 is: 17,799,333.75
Step by Step Solution
- Step 1: Write the proportion equation
20,236,197.12 : 27,927,560.76 = 12,897,324.96 : x - Step 2: Convert to fraction form
20,236,197.12/27,927,560.76 = 12,897,324.96/x - Step 3: Cross multiply
20,236,197.12x = 27,927,560.76 × 12,897,324.96 - Step 4: Simplify right side
20,236,197.12x = 360,190,826,461,864.62 - Step 5: Solve for x
x = 360,190,826,461,864.62/20,236,197.12 - Step 6: Final answer
x = 17,799,333.75
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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.