Finding the Fourth Proportional to 15,343,762.32, 21,174,091.86 and 8,374,489.84
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Solution
The fourth proportional to 15,343,762.32, 21,174,091.86 and 8,374,489.84 is: 11,556,632.17
Step by Step Solution
- Step 1: Write the proportion equation
15,343,762.32 : 21,174,091.86 = 8,374,489.84 : x - Step 2: Convert to fraction form
15,343,762.32/21,174,091.86 = 8,374,489.84/x - Step 3: Cross multiply
15,343,762.32x = 21,174,091.86 × 8,374,489.84 - Step 4: Simplify right side
15,343,762.32x = 177,322,217,211,755.25 - Step 5: Solve for x
x = 177,322,217,211,755.25/15,343,762.32 - Step 6: Final answer
x = 11,556,632.17
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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.