Finding the Fourth Proportional to 20,902,057.84, 31,357,124.41 and 7,947,201.25
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Solution
The fourth proportional to 20,902,057.84, 31,357,124.41 and 7,947,201.25 is: 11,922,337.04
Step by Step Solution
- Step 1: Write the proportion equation
20,902,057.84 : 31,357,124.41 = 7,947,201.25 : x - Step 2: Convert to fraction form
20,902,057.84/31,357,124.41 = 7,947,201.25/x - Step 3: Cross multiply
20,902,057.84x = 31,357,124.41 × 7,947,201.25 - Step 4: Simplify right side
20,902,057.84x = 249,201,378,307,557.50 - Step 5: Solve for x
x = 249,201,378,307,557.50/20,902,057.84 - Step 6: Final answer
x = 11,922,337.04
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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.