Finding the Fourth Proportional to 13,612,589.58, 18,784,217.28 and 7,811,246.55
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Solution
The fourth proportional to 13,612,589.58, 18,784,217.28 and 7,811,246.55 is: 10,778,856.70
Step by Step Solution
- Step 1: Write the proportion equation
13,612,589.58 : 18,784,217.28 = 7,811,246.55 : x - Step 2: Convert to fraction form
13,612,589.58/18,784,217.28 = 7,811,246.55/x - Step 3: Cross multiply
13,612,589.58x = 18,784,217.28 × 7,811,246.55 - Step 4: Simplify right side
13,612,589.58x = 146,728,152,422,850.38 - Step 5: Solve for x
x = 146,728,152,422,850.38/13,612,589.58 - Step 6: Final answer
x = 10,778,856.70
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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.