Finding the Fourth Proportional to 13,377,742.12, 18,461,527.32 and 7,577,728.12
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Solution
The fourth proportional to 13,377,742.12, 18,461,527.32 and 7,577,728.12 is: 10,457,402.56
Step by Step Solution
- Step 1: Write the proportion equation
13,377,742.12 : 18,461,527.32 = 7,577,728.12 : x - Step 2: Convert to fraction form
13,377,742.12/18,461,527.32 = 7,577,728.12/x - Step 3: Cross multiply
13,377,742.12x = 18,461,527.32 × 7,577,728.12 - Step 4: Simplify right side
13,377,742.12x = 139,896,434,710,912.25 - Step 5: Solve for x
x = 139,896,434,710,912.25/13,377,742.12 - Step 6: Final answer
x = 10,457,402.56
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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.