Finding the Fourth Proportional to 18,721,815.70, 26,286,124.70 and 18,721,815.70
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Solution
The fourth proportional to 18,721,815.70, 26,286,124.70 and 18,721,815.70 is: 26,286,124.70
Step by Step Solution
- Step 1: Write the proportion equation
18,721,815.70 : 26,286,124.70 = 18,721,815.70 : x - Step 2: Convert to fraction form
18,721,815.70/26,286,124.70 = 18,721,815.70/x - Step 3: Cross multiply
18,721,815.70x = 26,286,124.70 × 18,721,815.70 - Step 4: Simplify right side
18,721,815.70x = 492,123,982,100,617.75 - Step 5: Solve for x
x = 492,123,982,100,617.75/18,721,815.70 - Step 6: Final answer
x = 26,286,124.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.