Finding the Fourth Proportional to 12,563,977.80, 18,845,966.70 and 8,259,305.70
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Solution
The fourth proportional to 12,563,977.80, 18,845,966.70 and 8,259,305.70 is: 12,388,958.55
Step by Step Solution
- Step 1: Write the proportion equation
12,563,977.80 : 18,845,966.70 = 8,259,305.70 : x - Step 2: Convert to fraction form
12,563,977.80/18,845,966.70 = 8,259,305.70/x - Step 3: Cross multiply
12,563,977.80x = 18,845,966.70 × 8,259,305.70 - Step 4: Simplify right side
12,563,977.80x = 155,654,600,187,320.19 - Step 5: Solve for x
x = 155,654,600,187,320.19/12,563,977.80 - Step 6: Final answer
x = 12,388,958.55
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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.