Finding the Fourth Proportional to 10,315,496.10, 15,489,768.15 and 8,203,145.70
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Solution
The fourth proportional to 10,315,496.10, 15,489,768.15 and 8,203,145.70 is: 12,317,858.86
Step by Step Solution
- Step 1: Write the proportion equation
10,315,496.10 : 15,489,768.15 = 8,203,145.70 : x - Step 2: Convert to fraction form
10,315,496.10/15,489,768.15 = 8,203,145.70/x - Step 3: Cross multiply
10,315,496.10x = 15,489,768.15 × 8,203,145.70 - Step 4: Simplify right side
10,315,496.10x = 127,064,824,993,669.47 - Step 5: Solve for x
x = 127,064,824,993,669.47/10,315,496.10 - Step 6: Final answer
x = 12,317,858.86
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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.