Finding the Fourth Proportional to 10,361,325.20, 15,513,994.20 and 8,121,837.20
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Solution
The fourth proportional to 10,361,325.20, 15,513,994.20 and 8,121,837.20 is: 12,160,812.71
Step by Step Solution
- Step 1: Write the proportion equation
10,361,325.20 : 15,513,994.20 = 8,121,837.20 : x - Step 2: Convert to fraction form
10,361,325.20/15,513,994.20 = 8,121,837.20/x - Step 3: Cross multiply
10,361,325.20x = 15,513,994.20 × 8,121,837.20 - Step 4: Simplify right side
10,361,325.20x = 126,002,135,214,144.23 - Step 5: Solve for x
x = 126,002,135,214,144.23/10,361,325.20 - Step 6: Final answer
x = 12,160,812.71
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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.