Finding the Fourth Proportional to 28,787,139.48, 39,726,156 and 15,734,390.84
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Solution
The fourth proportional to 28,787,139.48, 39,726,156 and 15,734,390.84 is: 21,713,406.62
Step by Step Solution
- Step 1: Write the proportion equation
28,787,139.48 : 39,726,156 = 15,734,390.84 : x - Step 2: Convert to fraction form
28,787,139.48/39,726,156 = 15,734,390.84/x - Step 3: Cross multiply
28,787,139.48x = 39,726,156 × 15,734,390.84 - Step 4: Simplify right side
28,787,139.48x = 625,066,865,074,811 - Step 5: Solve for x
x = 625,066,865,074,811/28,787,139.48 - Step 6: Final answer
x = 21,713,406.62
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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.