Finding the Fourth Proportional to 21,580,620.18, 29,780,903.43 and 11,790,853.62
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Solution
The fourth proportional to 21,580,620.18, 29,780,903.43 and 11,790,853.62 is: 16,271,185.45
Step by Step Solution
- Step 1: Write the proportion equation
21,580,620.18 : 29,780,903.43 = 11,790,853.62 : x - Step 2: Convert to fraction form
21,580,620.18/29,780,903.43 = 11,790,853.62/x - Step 3: Cross multiply
21,580,620.18x = 29,780,903.43 × 11,790,853.62 - Step 4: Simplify right side
21,580,620.18x = 351,142,273,014,485.88 - Step 5: Solve for x
x = 351,142,273,014,485.88/21,580,620.18 - Step 6: Final answer
x = 16,271,185.45
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1.5x scale
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.