Finding the Fourth Proportional to 20,639,210.87, 30,891,448.98 and 15,172,858.17
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Solution
The fourth proportional to 20,639,210.87, 30,891,448.98 and 15,172,858.17 is: 22,709,762.35
Step by Step Solution
- Step 1: Write the proportion equation
20,639,210.87 : 30,891,448.98 = 15,172,858.17 : x - Step 2: Convert to fraction form
20,639,210.87/30,891,448.98 = 15,172,858.17/x - Step 3: Cross multiply
20,639,210.87x = 30,891,448.98 × 15,172,858.17 - Step 4: Simplify right side
20,639,210.87x = 468,711,574,039,331.19 - Step 5: Solve for x
x = 468,711,574,039,331.19/20,639,210.87 - Step 6: Final answer
x = 22,709,762.35
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.