Finding the Fourth Proportional to 28,585,228.85, 39,447,864.92 and 15,532,487.99
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Solution
The fourth proportional to 28,585,228.85, 39,447,864.92 and 15,532,487.99 is: 21,434,968.78
Step by Step Solution
- Step 1: Write the proportion equation
28,585,228.85 : 39,447,864.92 = 15,532,487.99 : x - Step 2: Convert to fraction form
28,585,228.85/39,447,864.92 = 15,532,487.99/x - Step 3: Cross multiply
28,585,228.85x = 39,447,864.92 × 15,532,487.99 - Step 4: Simplify right side
28,585,228.85x = 612,723,487,942,634.12 - Step 5: Solve for x
x = 612,723,487,942,634.12/28,585,228.85 - Step 6: Final answer
x = 21,434,968.78
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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.