Finding the Fourth Proportional to 19,681,891.21, 29,519,471.87 and 5,301,595.90
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Solution
The fourth proportional to 19,681,891.21, 29,519,471.87 and 5,301,595.90 is: 7,951,487.45
Step by Step Solution
- Step 1: Write the proportion equation
19,681,891.21 : 29,519,471.87 = 5,301,595.90 : x - Step 2: Convert to fraction form
19,681,891.21/29,519,471.87 = 5,301,595.90/x - Step 3: Cross multiply
19,681,891.21x = 29,519,471.87 × 5,301,595.90 - Step 4: Simplify right side
19,681,891.21x = 156,500,310,862,051.97 - Step 5: Solve for x
x = 156,500,310,862,051.97/19,681,891.21 - Step 6: Final answer
x = 7,951,487.45
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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.