Finding the Fourth Proportional to 13,146,402.07, 18,142,974.18 and 7,265,909.75
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Solution
The fourth proportional to 13,146,402.07, 18,142,974.18 and 7,265,909.75 is: 10,027,474.61
Step by Step Solution
- Step 1: Write the proportion equation
13,146,402.07 : 18,142,974.18 = 7,265,909.75 : x - Step 2: Convert to fraction form
13,146,402.07/18,142,974.18 = 7,265,909.75/x - Step 3: Cross multiply
13,146,402.07x = 18,142,974.18 × 7,265,909.75 - Step 4: Simplify right side
13,146,402.07x = 131,825,212,988,460.25 - Step 5: Solve for x
x = 131,825,212,988,460.25/13,146,402.07 - Step 6: Final answer
x = 10,027,474.61
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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.