Finding the Fourth Proportional to 28,816,497.68, 39,766,647.90 and 15,585,689.37
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Solution
The fourth proportional to 28,816,497.68, 39,766,647.90 and 15,585,689.37 is: 21,508,187.03
Step by Step Solution
- Step 1: Write the proportion equation
28,816,497.68 : 39,766,647.90 = 15,585,689.37 : x - Step 2: Convert to fraction form
28,816,497.68/39,766,647.90 = 15,585,689.37/x - Step 3: Cross multiply
28,816,497.68x = 39,766,647.90 × 15,585,689.37 - Step 4: Simplify right side
28,816,497.68x = 619,790,621,455,562.75 - Step 5: Solve for x
x = 619,790,621,455,562.75/28,816,497.68 - Step 6: Final answer
x = 21,508,187.03
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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.