Finding the Fourth Proportional to 19,720,256.80, 29,580,385.20 and 18,393,152.80
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Solution
The fourth proportional to 19,720,256.80, 29,580,385.20 and 18,393,152.80 is: 27,589,729.20
Step by Step Solution
- Step 1: Write the proportion equation
19,720,256.80 : 29,580,385.20 = 18,393,152.80 : x - Step 2: Convert to fraction form
19,720,256.80/29,580,385.20 = 18,393,152.80/x - Step 3: Cross multiply
19,720,256.80x = 29,580,385.20 × 18,393,152.80 - Step 4: Simplify right side
19,720,256.80x = 544,076,544,866,458.56 - Step 5: Solve for x
x = 544,076,544,866,458.56/19,720,256.80 - Step 6: Final answer
x = 27,589,729.20
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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.