Finding the Fourth Proportional to 20,172,599.68, 27,838,055.64 and 11,470,772.92
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Solution
The fourth proportional to 20,172,599.68, 27,838,055.64 and 11,470,772.92 is: 15,829,591.62
Step by Step Solution
- Step 1: Write the proportion equation
20,172,599.68 : 27,838,055.64 = 11,470,772.92 : x - Step 2: Convert to fraction form
20,172,599.68/27,838,055.64 = 11,470,772.92/x - Step 3: Cross multiply
20,172,599.68x = 27,838,055.64 × 11,470,772.92 - Step 4: Simplify right side
20,172,599.68x = 319,324,014,780,765.25 - Step 5: Solve for x
x = 319,324,014,780,765.25/20,172,599.68 - Step 6: Final answer
x = 15,829,591.62
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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.