Finding the Fourth Proportional to 13,309,210.43, 18,366,765.74 and 7,197,638.93
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Solution
The fourth proportional to 13,309,210.43, 18,366,765.74 and 7,197,638.93 is: 9,932,771.65
Step by Step Solution
- Step 1: Write the proportion equation
13,309,210.43 : 18,366,765.74 = 7,197,638.93 : x - Step 2: Convert to fraction form
13,309,210.43/18,366,765.74 = 7,197,638.93/x - Step 3: Cross multiply
13,309,210.43x = 18,366,765.74 × 7,197,638.93 - Step 4: Simplify right side
13,309,210.43x = 132,197,347,980,592.23 - Step 5: Solve for x
x = 132,197,347,980,592.23/13,309,210.43 - Step 6: Final answer
x = 9,932,771.65
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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.