Finding the Fourth Proportional to 10,369,997.20, 15,554,995.80 and 8,205,158.80
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Solution
The fourth proportional to 10,369,997.20, 15,554,995.80 and 8,205,158.80 is: 12,307,738.20
Step by Step Solution
- Step 1: Write the proportion equation
10,369,997.20 : 15,554,995.80 = 8,205,158.80 : x - Step 2: Convert to fraction form
10,369,997.20/15,554,995.80 = 8,205,158.80/x - Step 3: Cross multiply
10,369,997.20x = 15,554,995.80 × 8,205,158.80 - Step 4: Simplify right side
10,369,997.20x = 127,631,210,672,333.05 - Step 5: Solve for x
x = 127,631,210,672,333.05/10,369,997.20 - Step 6: Final answer
x = 12,307,738.20
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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.