Finding the Fourth Proportional to 28,975,563.20, 39,986,043.36 and 15,744,624.32
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Solution
The fourth proportional to 28,975,563.20, 39,986,043.36 and 15,744,624.32 is: 21,727,454.49
Step by Step Solution
- Step 1: Write the proportion equation
28,975,563.20 : 39,986,043.36 = 15,744,624.32 : x - Step 2: Convert to fraction form
28,975,563.20/39,986,043.36 = 15,744,624.32/x - Step 3: Cross multiply
28,975,563.20x = 39,986,043.36 × 15,744,624.32 - Step 4: Simplify right side
28,975,563.20x = 629,565,230,746,430.50 - Step 5: Solve for x
x = 629,565,230,746,430.50/28,975,563.20 - Step 6: Final answer
x = 21,727,454.49
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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.