Finding the Fourth Proportional to 21,409,561.05, 29,545,221.91 and 11,620,004.12
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Solution
The fourth proportional to 21,409,561.05, 29,545,221.91 and 11,620,004.12 is: 16,035,620.70
Step by Step Solution
- Step 1: Write the proportion equation
21,409,561.05 : 29,545,221.91 = 11,620,004.12 : x - Step 2: Convert to fraction form
21,409,561.05/29,545,221.91 = 11,620,004.12/x - Step 3: Cross multiply
21,409,561.05x = 29,545,221.91 × 11,620,004.12 - Step 4: Simplify right side
21,409,561.05x = 343,315,600,276,320.25 - Step 5: Solve for x
x = 343,315,600,276,320.25/21,409,561.05 - Step 6: Final answer
x = 16,035,620.70
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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.