Finding the Fourth Proportional to 15,168,077.78, 20,932,041.99 and 8,198,741.18
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Solution
The fourth proportional to 15,168,077.78, 20,932,041.99 and 8,198,741.18 is: 11,314,313.99
Step by Step Solution
- Step 1: Write the proportion equation
15,168,077.78 : 20,932,041.99 = 8,198,741.18 : x - Step 2: Convert to fraction form
15,168,077.78/20,932,041.99 = 8,198,741.18/x - Step 3: Cross multiply
15,168,077.78x = 20,932,041.99 × 8,198,741.18 - Step 4: Simplify right side
15,168,077.78x = 171,616,394,540,241.91 - Step 5: Solve for x
x = 171,616,394,540,241.91/15,168,077.78 - Step 6: Final answer
x = 11,314,313.99
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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.