Finding the Fourth Proportional to 18,521,862.99, 27,772,025.57 and 7,008,218.21
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Solution
The fourth proportional to 18,521,862.99, 27,772,025.57 and 7,008,218.21 is: 10,508,252.62
Step by Step Solution
- Step 1: Write the proportion equation
18,521,862.99 : 27,772,025.57 = 7,008,218.21 : x - Step 2: Convert to fraction form
18,521,862.99/27,772,025.57 = 7,008,218.21/x - Step 3: Cross multiply
18,521,862.99x = 27,772,025.57 × 7,008,218.21 - Step 4: Simplify right side
18,521,862.99x = 194,632,415,328,259.62 - Step 5: Solve for x
x = 194,632,415,328,259.62/18,521,862.99 - Step 6: Final answer
x = 10,508,252.62
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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.