Finding the Fourth Proportional to 8,960,870.81, 13,431,134.12 and 7,879,289.96
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Solution
The fourth proportional to 8,960,870.81, 13,431,134.12 and 7,879,289.96 is: 11,809,990.62
Step by Step Solution
- Step 1: Write the proportion equation
8,960,870.81 : 13,431,134.12 = 7,879,289.96 : x - Step 2: Convert to fraction form
8,960,870.81/13,431,134.12 = 7,879,289.96/x - Step 3: Cross multiply
8,960,870.81x = 13,431,134.12 × 7,879,289.96 - Step 4: Simplify right side
8,960,870.81x = 105,827,800,116,577.31 - Step 5: Solve for x
x = 105,827,800,116,577.31/8,960,870.81 - Step 6: Final answer
x = 11,809,990.62
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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.