Finding the Fourth Proportional to 13,419,026.70, 18,518,468.67 and 7,307,450.70
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Solution
The fourth proportional to 13,419,026.70, 18,518,468.67 and 7,307,450.70 is: 10,084,397.32
Step by Step Solution
- Step 1: Write the proportion equation
13,419,026.70 : 18,518,468.67 = 7,307,450.70 : x - Step 2: Convert to fraction form
13,419,026.70/18,518,468.67 = 7,307,450.70/x - Step 3: Cross multiply
13,419,026.70x = 18,518,468.67 × 7,307,450.70 - Step 4: Simplify right side
13,419,026.70x = 135,322,796,845,519.58 - Step 5: Solve for x
x = 135,322,796,845,519.58/13,419,026.70 - Step 6: Final answer
x = 10,084,397.32
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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.