Finding the Fourth Proportional to 13,122,121.34, 18,108,538.72 and 7,320,903.97
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Solution
The fourth proportional to 13,122,121.34, 18,108,538.72 and 7,320,903.97 is: 10,102,853.77
Step by Step Solution
- Step 1: Write the proportion equation
13,122,121.34 : 18,108,538.72 = 7,320,903.97 : x - Step 2: Convert to fraction form
13,122,121.34/18,108,538.72 = 7,320,903.97/x - Step 3: Cross multiply
13,122,121.34x = 18,108,538.72 × 7,320,903.97 - Step 4: Simplify right side
13,122,121.34x = 132,570,873,006,146.70 - Step 5: Solve for x
x = 132,570,873,006,146.70/13,122,121.34 - Step 6: Final answer
x = 10,102,853.77
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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.