Finding the Fourth Proportional to 13,578,879.10, 18,738,282.72 and 7,698,908.84
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Solution
The fourth proportional to 13,578,879.10, 18,738,282.72 and 7,698,908.84 is: 10,624,170.78
Step by Step Solution
- Step 1: Write the proportion equation
13,578,879.10 : 18,738,282.72 = 7,698,908.84 : x - Step 2: Convert to fraction form
13,578,879.10/18,738,282.72 = 7,698,908.84/x - Step 3: Cross multiply
13,578,879.10x = 18,738,282.72 × 7,698,908.84 - Step 4: Simplify right side
13,578,879.10x = 144,264,330,520,009.56 - Step 5: Solve for x
x = 144,264,330,520,009.56/13,578,879.10 - Step 6: Final answer
x = 10,624,170.78
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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.