Finding the Fourth Proportional to 20,760,315.99, 28,648,681.00 and 11,467,686.05
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Solution
The fourth proportional to 20,760,315.99, 28,648,681.00 and 11,467,686.05 is: 15,825,100.15
Step by Step Solution
- Step 1: Write the proportion equation
20,760,315.99 : 28,648,681.00 = 11,467,686.05 : x - Step 2: Convert to fraction form
20,760,315.99/28,648,681.00 = 11,467,686.05/x - Step 3: Cross multiply
20,760,315.99x = 28,648,681.00 × 11,467,686.05 - Step 4: Simplify right side
20,760,315.99x = 328,534,079,554,891 - Step 5: Solve for x
x = 328,534,079,554,891/20,760,315.99 - Step 6: Final answer
x = 15,825,100.15
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1.5x scale
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.