Finding the Fourth Proportional to 19,720,405.40, 29,580,608.10 and 11,217,349.40
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Solution
The fourth proportional to 19,720,405.40, 29,580,608.10 and 11,217,349.40 is: 16,826,024.10
Step by Step Solution
- Step 1: Write the proportion equation
19,720,405.40 : 29,580,608.10 = 11,217,349.40 : x - Step 2: Convert to fraction form
19,720,405.40/29,580,608.10 = 11,217,349.40/x - Step 3: Cross multiply
19,720,405.40x = 29,580,608.10 × 11,217,349.40 - Step 4: Simplify right side
19,720,405.40x = 331,816,016,522,170.19 - Step 5: Solve for x
x = 331,816,016,522,170.19/19,720,405.40 - Step 6: Final answer
x = 16,826,024.10
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.