Finding the Fourth Proportional to 20,826,176.80, 31,239,265.20 and 5,473,436.80
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Solution
The fourth proportional to 20,826,176.80, 31,239,265.20 and 5,473,436.80 is: 8,210,155.20
Step by Step Solution
- Step 1: Write the proportion equation
20,826,176.80 : 31,239,265.20 = 5,473,436.80 : x - Step 2: Convert to fraction form
20,826,176.80/31,239,265.20 = 5,473,436.80/x - Step 3: Cross multiply
20,826,176.80x = 31,239,265.20 × 5,473,436.80 - Step 4: Simplify right side
20,826,176.80x = 170,986,143,750,639.34 - Step 5: Solve for x
x = 170,986,143,750,639.34/20,826,176.80 - Step 6: Final answer
x = 8,210,155.20
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1.5x scale
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.