Finding the Fourth Proportional to 20,547,491.05, 28,347,645.01 and 11,727,431.87
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Solution
The fourth proportional to 20,547,491.05, 28,347,645.01 and 11,727,431.87 is: 16,179,351.28
Step by Step Solution
- Step 1: Write the proportion equation
20,547,491.05 : 28,347,645.01 = 11,727,431.87 : x - Step 2: Convert to fraction form
20,547,491.05/28,347,645.01 = 11,727,431.87/x - Step 3: Cross multiply
20,547,491.05x = 28,347,645.01 × 11,727,431.87 - Step 4: Simplify right side
20,547,491.05x = 332,445,075,629,459.56 - Step 5: Solve for x
x = 332,445,075,629,459.56/20,547,491.05 - Step 6: Final answer
x = 16,179,351.28
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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.