Finding the Fourth Proportional to 21,160,299.13, 29,201,532.76 and 11,869,928.60
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Solution
The fourth proportional to 21,160,299.13, 29,201,532.76 and 11,869,928.60 is: 16,380,680.95
Step by Step Solution
- Step 1: Write the proportion equation
21,160,299.13 : 29,201,532.76 = 11,869,928.60 : x - Step 2: Convert to fraction form
21,160,299.13/29,201,532.76 = 11,869,928.60/x - Step 3: Cross multiply
21,160,299.13x = 29,201,532.76 × 11,869,928.60 - Step 4: Simplify right side
21,160,299.13x = 346,620,108,871,760.94 - Step 5: Solve for x
x = 346,620,108,871,760.94/21,160,299.13 - Step 6: Final answer
x = 16,380,680.95
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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.