Finding the Fourth Proportional to 13,613,912.87, 18,786,653.12 and 7,418,827.55
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Solution
The fourth proportional to 13,613,912.87, 18,786,653.12 and 7,418,827.55 is: 10,237,684.12
Step by Step Solution
- Step 1: Write the proportion equation
13,613,912.87 : 18,786,653.12 = 7,418,827.55 : x - Step 2: Convert to fraction form
13,613,912.87/18,786,653.12 = 7,418,827.55/x - Step 3: Cross multiply
13,613,912.87x = 18,786,653.12 × 7,418,827.55 - Step 4: Simplify right side
13,613,912.87x = 139,374,939,688,471.25 - Step 5: Solve for x
x = 139,374,939,688,471.25/13,613,912.87 - Step 6: Final answer
x = 10,237,684.12
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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.