Finding the Fourth Proportional to 12,278,756.88, 18,430,910.14 and 9,043,947.12
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Solution
The fourth proportional to 12,278,756.88, 18,430,910.14 and 9,043,947.12 is: 13,575,330.00
Step by Step Solution
- Step 1: Write the proportion equation
12,278,756.88 : 18,430,910.14 = 9,043,947.12 : x - Step 2: Convert to fraction form
12,278,756.88/18,430,910.14 = 9,043,947.12/x - Step 3: Cross multiply
12,278,756.88x = 18,430,910.14 × 9,043,947.12 - Step 4: Simplify right side
12,278,756.88x = 166,688,176,679,631.78 - Step 5: Solve for x
x = 166,688,176,679,631.78/12,278,756.88 - Step 6: Final answer
x = 13,575,330.00
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1.5x scale
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.