Finding the Fourth Proportional to 12,928,161.42, 17,840,916.81 and 7,126,816.14
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Solution
The fourth proportional to 12,928,161.42, 17,840,916.81 and 7,126,816.14 is: 9,835,036.07
Step by Step Solution
- Step 1: Write the proportion equation
12,928,161.42 : 17,840,916.81 = 7,126,816.14 : x - Step 2: Convert to fraction form
12,928,161.42/17,840,916.81 = 7,126,816.14/x - Step 3: Cross multiply
12,928,161.42x = 17,840,916.81 × 7,126,816.14 - Step 4: Simplify right side
12,928,161.42x = 127,148,933,873,905.30 - Step 5: Solve for x
x = 127,148,933,873,905.30/12,928,161.42 - Step 6: Final answer
x = 9,835,036.07
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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.