Finding the Fourth Proportional to 28,775,674.58, 39,709,249.26 and 15,723,381.56
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Solution
The fourth proportional to 28,775,674.58, 39,709,249.26 and 15,723,381.56 is: 21,697,620.88
Step by Step Solution
- Step 1: Write the proportion equation
28,775,674.58 : 39,709,249.26 = 15,723,381.56 : x - Step 2: Convert to fraction form
28,775,674.58/39,709,249.26 = 15,723,381.56/x - Step 3: Cross multiply
28,775,674.58x = 39,709,249.26 × 15,723,381.56 - Step 4: Simplify right side
28,775,674.58x = 624,363,677,576,127.62 - Step 5: Solve for x
x = 624,363,677,576,127.62/28,775,674.58 - Step 6: Final answer
x = 21,697,620.88
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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.