Finding the Fourth Proportional to 19,686,647.20, 29,529,970.80 and 16,994,012.80
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Solution
The fourth proportional to 19,686,647.20, 29,529,970.80 and 16,994,012.80 is: 25,491,019.20
Step by Step Solution
- Step 1: Write the proportion equation
19,686,647.20 : 29,529,970.80 = 16,994,012.80 : x - Step 2: Convert to fraction form
19,686,647.20/29,529,970.80 = 16,994,012.80/x - Step 3: Cross multiply
19,686,647.20x = 29,529,970.80 × 16,994,012.80 - Step 4: Simplify right side
19,686,647.20x = 501,832,701,758,826.25 - Step 5: Solve for x
x = 501,832,701,758,826.25/19,686,647.20 - Step 6: Final answer
x = 25,491,019.20
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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.