Finding the Fourth Proportional to 13,578,878.98, 18,738,282.57 and 7,698,908.73
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Solution
The fourth proportional to 13,578,878.98, 18,738,282.57 and 7,698,908.73 is: 10,624,170.63
Step by Step Solution
- Step 1: Write the proportion equation
13,578,878.98 : 18,738,282.57 = 7,698,908.73 : x - Step 2: Convert to fraction form
13,578,878.98/18,738,282.57 = 7,698,908.73/x - Step 3: Cross multiply
13,578,878.98x = 18,738,282.57 × 7,698,908.73 - Step 4: Simplify right side
13,578,878.98x = 144,264,327,263,379.84 - Step 5: Solve for x
x = 144,264,327,263,379.84/13,578,878.98 - Step 6: Final answer
x = 10,624,170.63
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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.