Finding the Fourth Proportional to 18,471,818.20, 27,707,727.30 and 18,219,875.80
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Solution
The fourth proportional to 18,471,818.20, 27,707,727.30 and 18,219,875.80 is: 27,329,813.70
Step by Step Solution
- Step 1: Write the proportion equation
18,471,818.20 : 27,707,727.30 = 18,219,875.80 : x - Step 2: Convert to fraction form
18,471,818.20/27,707,727.30 = 18,219,875.80/x - Step 3: Cross multiply
18,471,818.20x = 27,707,727.30 × 18,219,875.80 - Step 4: Simplify right side
18,471,818.20x = 504,831,350,106,269.38 - Step 5: Solve for x
x = 504,831,350,106,269.38/18,471,818.20 - Step 6: Final answer
x = 27,329,813.70
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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.