Finding the Fourth Proportional to 13,165,865.14, 18,160,949.35 and 8,695,447.60
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Solution
The fourth proportional to 13,165,865.14, 18,160,949.35 and 8,695,447.60 is: 11,994,470.68
Step by Step Solution
- Step 1: Write the proportion equation
13,165,865.14 : 18,160,949.35 = 8,695,447.60 : x - Step 2: Convert to fraction form
13,165,865.14/18,160,949.35 = 8,695,447.60/x - Step 3: Cross multiply
13,165,865.14x = 18,160,949.35 × 8,695,447.60 - Step 4: Simplify right side
13,165,865.14x = 157,917,583,439,179.06 - Step 5: Solve for x
x = 157,917,583,439,179.06/13,165,865.14 - Step 6: Final answer
x = 11,994,470.68
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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.