Finding the Fourth Proportional to 15,106,715.36, 20,847,270.20 and 8,231,197.44
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Solution
The fourth proportional to 15,106,715.36, 20,847,270.20 and 8,231,197.44 is: 11,359,054.10
Step by Step Solution
- Step 1: Write the proportion equation
15,106,715.36 : 20,847,270.20 = 8,231,197.44 : x - Step 2: Convert to fraction form
15,106,715.36/20,847,270.20 = 8,231,197.44/x - Step 3: Cross multiply
15,106,715.36x = 20,847,270.20 × 8,231,197.44 - Step 4: Simplify right side
15,106,715.36x = 171,597,997,101,228.28 - Step 5: Solve for x
x = 171,597,997,101,228.28/15,106,715.36 - Step 6: Final answer
x = 11,359,054.10
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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.