Finding the Fourth Proportional to 13,146,739.20, 19,720,108.80 and 8,081,625.60
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Solution
The fourth proportional to 13,146,739.20, 19,720,108.80 and 8,081,625.60 is: 12,122,438.40
Step by Step Solution
- Step 1: Write the proportion equation
13,146,739.20 : 19,720,108.80 = 8,081,625.60 : x - Step 2: Convert to fraction form
13,146,739.20/19,720,108.80 = 8,081,625.60/x - Step 3: Cross multiply
13,146,739.20x = 19,720,108.80 × 8,081,625.60 - Step 4: Simplify right side
13,146,739.20x = 159,370,536,112,865.28 - Step 5: Solve for x
x = 159,370,536,112,865.28/13,146,739.20 - Step 6: Final answer
x = 12,122,438.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.