Finding the Fourth Proportional to 15,133,062.80, 20,884,130.16 and 8,257,922.12
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Solution
The fourth proportional to 15,133,062.80, 20,884,130.16 and 8,257,922.12 is: 11,396,207.28
Step by Step Solution
- Step 1: Write the proportion equation
15,133,062.80 : 20,884,130.16 = 8,257,922.12 : x - Step 2: Convert to fraction form
15,133,062.80/20,884,130.16 = 8,257,922.12/x - Step 3: Cross multiply
15,133,062.80x = 20,884,130.16 × 8,257,922.12 - Step 4: Simplify right side
15,133,062.80x = 172,459,520,405,223.16 - Step 5: Solve for x
x = 172,459,520,405,223.16/15,133,062.80 - Step 6: Final answer
x = 11,396,207.28
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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.