Finding the Fourth Proportional to 12,788,841.42, 17,660,387.34 and 8,213,134.41
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Solution
The fourth proportional to 12,788,841.42, 17,660,387.34 and 8,213,134.41 is: 11,341,694.70
Step by Step Solution
- Step 1: Write the proportion equation
12,788,841.42 : 17,660,387.34 = 8,213,134.41 : x - Step 2: Convert to fraction form
12,788,841.42/17,660,387.34 = 8,213,134.41/x - Step 3: Cross multiply
12,788,841.42x = 17,660,387.34 × 8,213,134.41 - Step 4: Simplify right side
12,788,841.42x = 145,047,134,956,082.38 - Step 5: Solve for x
x = 145,047,134,956,082.38/12,788,841.42 - Step 6: Final answer
x = 11,341,694.70
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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.