Finding the Fourth Proportional to 13,645,074.50, 18,831,854.18 and 7,766,138.13
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Solution
The fourth proportional to 13,645,074.50, 18,831,854.18 and 7,766,138.13 is: 10,718,210.50
Step by Step Solution
- Step 1: Write the proportion equation
13,645,074.50 : 18,831,854.18 = 7,766,138.13 : x - Step 2: Convert to fraction form
13,645,074.50/18,831,854.18 = 7,766,138.13/x - Step 3: Cross multiply
13,645,074.50x = 18,831,854.18 × 7,766,138.13 - Step 4: Simplify right side
13,645,074.50x = 146,250,780,767,067.19 - Step 5: Solve for x
x = 146,250,780,767,067.19/13,645,074.50 - Step 6: Final answer
x = 10,718,210.50
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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.