Finding the Fourth Proportional to 20,291,759.94, 30,405,731.58 and 15,691,974.06
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Solution
The fourth proportional to 20,291,759.94, 30,405,731.58 and 15,691,974.06 is: 23,513,285.82
Step by Step Solution
- Step 1: Write the proportion equation
20,291,759.94 : 30,405,731.58 = 15,691,974.06 : x - Step 2: Convert to fraction form
20,291,759.94/30,405,731.58 = 15,691,974.06/x - Step 3: Cross multiply
20,291,759.94x = 30,405,731.58 × 15,691,974.06 - Step 4: Simplify right side
20,291,759.94x = 477,125,951,228,682.81 - Step 5: Solve for x
x = 477,125,951,228,682.81/20,291,759.94 - Step 6: Final answer
x = 23,513,285.82
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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.