Finding the Fourth Proportional to 12,948,469.68, 17,868,889.08 and 7,147,252.92
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Solution
The fourth proportional to 12,948,469.68, 17,868,889.08 and 7,147,252.92 is: 9,863,209.54
Step by Step Solution
- Step 1: Write the proportion equation
12,948,469.68 : 17,868,889.08 = 7,147,252.92 : x - Step 2: Convert to fraction form
12,948,469.68/17,868,889.08 = 7,147,252.92/x - Step 3: Cross multiply
12,948,469.68x = 17,868,889.08 × 7,147,252.92 - Step 4: Simplify right side
12,948,469.68x = 127,713,469,654,186.09 - Step 5: Solve for x
x = 127,713,469,654,186.09/12,948,469.68 - Step 6: Final answer
x = 9,863,209.54
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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.