Finding the Fourth Proportional to 13,554,113.87, 18,704,638.64 and 8,121,605.87
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Solution
The fourth proportional to 13,554,113.87, 18,704,638.64 and 8,121,605.87 is: 11,207,793.03
Step by Step Solution
- Step 1: Write the proportion equation
13,554,113.87 : 18,704,638.64 = 8,121,605.87 : x - Step 2: Convert to fraction form
13,554,113.87/18,704,638.64 = 8,121,605.87/x - Step 3: Cross multiply
13,554,113.87x = 18,704,638.64 × 8,121,605.87 - Step 4: Simplify right side
13,554,113.87x = 151,911,702,840,721.62 - Step 5: Solve for x
x = 151,911,702,840,721.62/13,554,113.87 - Step 6: Final answer
x = 11,207,793.03
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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.