Finding the Fourth Proportional to 12,928,084.54, 17,840,810.67 and 7,126,738.99
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Solution
The fourth proportional to 12,928,084.54, 17,840,810.67 and 7,126,738.99 is: 9,834,929.58
Step by Step Solution
- Step 1: Write the proportion equation
12,928,084.54 : 17,840,810.67 = 7,126,738.99 : x - Step 2: Convert to fraction form
12,928,084.54/17,840,810.67 = 7,126,738.99/x - Step 3: Cross multiply
12,928,084.54x = 17,840,810.67 × 7,126,738.99 - Step 4: Simplify right side
12,928,084.54x = 127,146,801,015,097.05 - Step 5: Solve for x
x = 127,146,801,015,097.05/12,928,084.54 - Step 6: Final answer
x = 9,834,929.58
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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.