Finding the Fourth Proportional to 19,978,292.28, 27,559,887.44 and 12,135,723.78
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Solution
The fourth proportional to 19,978,292.28, 27,559,887.44 and 12,135,723.78 is: 16,741,129.66
Step by Step Solution
- Step 1: Write the proportion equation
19,978,292.28 : 27,559,887.44 = 12,135,723.78 : x - Step 2: Convert to fraction form
19,978,292.28/27,559,887.44 = 12,135,723.78/x - Step 3: Cross multiply
19,978,292.28x = 27,559,887.44 × 12,135,723.78 - Step 4: Simplify right side
19,978,292.28x = 334,459,181,379,731.31 - Step 5: Solve for x
x = 334,459,181,379,731.31/19,978,292.28 - Step 6: Final answer
x = 16,741,129.66
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.