Finding the Fourth Proportional to 13,500,269.87, 18,630,421.79 and 7,305,316.62
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Solution
The fourth proportional to 13,500,269.87, 18,630,421.79 and 7,305,316.62 is: 10,081,363.65
Step by Step Solution
- Step 1: Write the proportion equation
13,500,269.87 : 18,630,421.79 = 7,305,316.62 : x - Step 2: Convert to fraction form
13,500,269.87/18,630,421.79 = 7,305,316.62/x - Step 3: Cross multiply
13,500,269.87x = 18,630,421.79 × 7,305,316.62 - Step 4: Simplify right side
13,500,269.87x = 136,101,129,940,097.14 - Step 5: Solve for x
x = 136,101,129,940,097.14/13,500,269.87 - Step 6: Final answer
x = 10,081,363.65
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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.