Finding the Fourth Proportional to 12,842,713.20, 19,261,121.88 and 7,656,790.08
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Solution
The fourth proportional to 12,842,713.20, 19,261,121.88 and 7,656,790.08 is: 11,483,427.58
Step by Step Solution
- Step 1: Write the proportion equation
12,842,713.20 : 19,261,121.88 = 7,656,790.08 : x - Step 2: Convert to fraction form
12,842,713.20/19,261,121.88 = 7,656,790.08/x - Step 3: Cross multiply
12,842,713.20x = 19,261,121.88 × 7,656,790.08 - Step 4: Simplify right side
12,842,713.20x = 147,478,366,940,454.94 - Step 5: Solve for x
x = 147,478,366,940,454.94/12,842,713.20 - Step 6: Final answer
x = 11,483,427.58
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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.