Finding the Fourth Proportional to 11,178,516.80, 16,771,927.36 and 7,765,005.12
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Solution
The fourth proportional to 11,178,516.80, 16,771,927.36 and 7,765,005.12 is: 11,650,391.92
Step by Step Solution
- Step 1: Write the proportion equation
11,178,516.80 : 16,771,927.36 = 7,765,005.12 : x - Step 2: Convert to fraction form
11,178,516.80/16,771,927.36 = 7,765,005.12/x - Step 3: Cross multiply
11,178,516.80x = 16,771,927.36 × 7,765,005.12 - Step 4: Simplify right side
11,178,516.80x = 130,234,101,822,668.08 - Step 5: Solve for x
x = 130,234,101,822,668.08/11,178,516.80 - Step 6: Final answer
x = 11,650,391.92
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.