Finding the Fourth Proportional to 12,101,947.20, 18,128,037.60 and 8,319,700.80
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Solution
The fourth proportional to 12,101,947.20, 18,128,037.60 and 8,319,700.80 is: 12,462,444.80
Step by Step Solution
- Step 1: Write the proportion equation
12,101,947.20 : 18,128,037.60 = 8,319,700.80 : x - Step 2: Convert to fraction form
12,101,947.20/18,128,037.60 = 8,319,700.80/x - Step 3: Cross multiply
12,101,947.20x = 18,128,037.60 × 8,319,700.80 - Step 4: Simplify right side
12,101,947.20x = 150,819,848,923,150.09 - Step 5: Solve for x
x = 150,819,848,923,150.09/12,101,947.20 - Step 6: Final answer
x = 12,462,444.80
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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.