Finding the Fourth Proportional to 13,236,991.42, 18,265,058.95 and 7,434,661.98
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Solution
The fourth proportional to 13,236,991.42, 18,265,058.95 and 7,434,661.98 is: 10,258,716.28
Step by Step Solution
- Step 1: Write the proportion equation
13,236,991.42 : 18,265,058.95 = 7,434,661.98 : x - Step 2: Convert to fraction form
13,236,991.42/18,265,058.95 = 7,434,661.98/x - Step 3: Cross multiply
13,236,991.42x = 18,265,058.95 × 7,434,661.98 - Step 4: Simplify right side
13,236,991.42x = 135,794,539,338,023.72 - Step 5: Solve for x
x = 135,794,539,338,023.72/13,236,991.42 - Step 6: Final answer
x = 10,258,716.28
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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.