Finding the Fourth Proportional to 11,078,841.15, 15,291,351.72 and 6,496,638.75
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Solution
The fourth proportional to 11,078,841.15, 15,291,351.72 and 6,496,638.75 is: 8,966,857.34
Step by Step Solution
- Step 1: Write the proportion equation
11,078,841.15 : 15,291,351.72 = 6,496,638.75 : x - Step 2: Convert to fraction form
11,078,841.15/15,291,351.72 = 6,496,638.75/x - Step 3: Cross multiply
11,078,841.15x = 15,291,351.72 × 6,496,638.75 - Step 4: Simplify right side
11,078,841.15x = 99,342,388,124,031.16 - Step 5: Solve for x
x = 99,342,388,124,031.16/11,078,841.15 - Step 6: Final answer
x = 8,966,857.34
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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.