Finding the Fourth Proportional to 13,309,212.13, 18,366,768.07 and 7,197,640.63
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Solution
The fourth proportional to 13,309,212.13, 18,366,768.07 and 7,197,640.63 is: 9,932,773.99
Step by Step Solution
- Step 1: Write the proportion equation
13,309,212.13 : 18,366,768.07 = 7,197,640.63 : x - Step 2: Convert to fraction form
13,309,212.13/18,366,768.07 = 7,197,640.63/x - Step 3: Cross multiply
13,309,212.13x = 18,366,768.07 × 7,197,640.63 - Step 4: Simplify right side
13,309,212.13x = 132,197,396,038,507.66 - Step 5: Solve for x
x = 132,197,396,038,507.66/13,309,212.13 - Step 6: Final answer
x = 9,932,773.99
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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.