Finding the Fourth Proportional to 12,518,217.80, 18,744,987.86 and 8,639,643.02
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Solution
The fourth proportional to 12,518,217.80, 18,744,987.86 and 8,639,643.02 is: 12,937,145.38
Step by Step Solution
- Step 1: Write the proportion equation
12,518,217.80 : 18,744,987.86 = 8,639,643.02 : x - Step 2: Convert to fraction form
12,518,217.80/18,744,987.86 = 8,639,643.02/x - Step 3: Cross multiply
12,518,217.80x = 18,744,987.86 × 8,639,643.02 - Step 4: Simplify right side
12,518,217.80x = 161,950,003,524,633.72 - Step 5: Solve for x
x = 161,950,003,524,633.72/12,518,217.80 - Step 6: Final answer
x = 12,937,145.38
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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.