Finding the Fourth Proportional to 13,398,571.56, 18,490,037.87 and 7,517,393.87
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Solution
The fourth proportional to 13,398,571.56, 18,490,037.87 and 7,517,393.87 is: 10,374,008.66
Step by Step Solution
- Step 1: Write the proportion equation
13,398,571.56 : 18,490,037.87 = 7,517,393.87 : x - Step 2: Convert to fraction form
13,398,571.56/18,490,037.87 = 7,517,393.87/x - Step 3: Cross multiply
13,398,571.56x = 18,490,037.87 × 7,517,393.87 - Step 4: Simplify right side
13,398,571.56x = 138,996,897,405,024.42 - Step 5: Solve for x
x = 138,996,897,405,024.42/13,398,571.56 - Step 6: Final answer
x = 10,374,008.66
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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.