Finding the Fourth Proportional to 19,720,195.80, 29,580,293.70 and 11,217,139.80
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Solution
The fourth proportional to 19,720,195.80, 29,580,293.70 and 11,217,139.80 is: 16,825,709.70
Step by Step Solution
- Step 1: Write the proportion equation
19,720,195.80 : 29,580,293.70 = 11,217,139.80 : x - Step 2: Convert to fraction form
19,720,195.80/29,580,293.70 = 11,217,139.80/x - Step 3: Cross multiply
19,720,195.80x = 29,580,293.70 × 11,217,139.80 - Step 4: Simplify right side
19,720,195.80x = 331,806,289,757,959.25 - Step 5: Solve for x
x = 331,806,289,757,959.25/19,720,195.80 - Step 6: Final answer
x = 16,825,709.70
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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.