Finding the Fourth Proportional to 13,512,194.36, 18,646,846.20 and 7,317,251.74
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Solution
The fourth proportional to 13,512,194.36, 18,646,846.20 and 7,317,251.74 is: 10,097,817.14
Step by Step Solution
- Step 1: Write the proportion equation
13,512,194.36 : 18,646,846.20 = 7,317,251.74 : x - Step 2: Convert to fraction form
13,512,194.36/18,646,846.20 = 7,317,251.74/x - Step 3: Cross multiply
13,512,194.36x = 18,646,846.20 × 7,317,251.74 - Step 4: Simplify right side
13,512,194.36x = 136,443,667,802,462.39 - Step 5: Solve for x
x = 136,443,667,802,462.39/13,512,194.36 - Step 6: Final answer
x = 10,097,817.14
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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.