Finding the Fourth Proportional to 21,320,142.24, 29,422,557.84 and 12,151,305.12
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Solution
The fourth proportional to 21,320,142.24, 29,422,557.84 and 12,151,305.12 is: 16,769,235.11
Step by Step Solution
- Step 1: Write the proportion equation
21,320,142.24 : 29,422,557.84 = 12,151,305.12 : x - Step 2: Convert to fraction form
21,320,142.24/29,422,557.84 = 12,151,305.12/x - Step 3: Cross multiply
21,320,142.24x = 29,422,557.84 × 12,151,305.12 - Step 4: Simplify right side
21,320,142.24x = 357,522,477,724,688.12 - Step 5: Solve for x
x = 357,522,477,724,688.12/21,320,142.24 - Step 6: Final answer
x = 16,769,235.11
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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.