Finding the Fourth Proportional to 18,365,575.77, 25,343,734.70 and 9,992,980
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Solution
The fourth proportional to 18,365,575.77, 25,343,734.70 and 9,992,980 is: 13,789,898.95
Step by Step Solution
- Step 1: Write the proportion equation
18,365,575.77 : 25,343,734.70 = 9,992,980 : x - Step 2: Convert to fraction form
18,365,575.77/25,343,734.70 = 9,992,980/x - Step 3: Cross multiply
18,365,575.77x = 25,343,734.70 × 9,992,980 - Step 4: Simplify right side
18,365,575.77x = 253,259,433,982,406 - Step 5: Solve for x
x = 253,259,433,982,406/18,365,575.77 - Step 6: Final answer
x = 13,789,898.95
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1.5x scale
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.