Finding the Fourth Proportional to 13,378,991.80, 18,462,698.82 and 7,796,882.44
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Solution
The fourth proportional to 13,378,991.80, 18,462,698.82 and 7,796,882.44 is: 10,759,517.19
Step by Step Solution
- Step 1: Write the proportion equation
13,378,991.80 : 18,462,698.82 = 7,796,882.44 : x - Step 2: Convert to fraction form
13,378,991.80/18,462,698.82 = 7,796,882.44/x - Step 3: Cross multiply
13,378,991.80x = 18,462,698.82 × 7,796,882.44 - Step 4: Simplify right side
13,378,991.80x = 143,951,492,224,666.72 - Step 5: Solve for x
x = 143,951,492,224,666.72/13,378,991.80 - Step 6: Final answer
x = 10,759,517.19
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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.