Finding the Fourth Proportional to 19,958,983.20, 29,938,474.80 and 18,447,328.80
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Solution
The fourth proportional to 19,958,983.20, 29,938,474.80 and 18,447,328.80 is: 27,670,993.20
Step by Step Solution
- Step 1: Write the proportion equation
19,958,983.20 : 29,938,474.80 = 18,447,328.80 : x - Step 2: Convert to fraction form
19,958,983.20/29,938,474.80 = 18,447,328.80/x - Step 3: Cross multiply
19,958,983.20x = 29,938,474.80 × 18,447,328.80 - Step 4: Simplify right side
19,958,983.20x = 552,284,888,406,114.25 - Step 5: Solve for x
x = 552,284,888,406,114.25/19,958,983.20 - Step 6: Final answer
x = 27,670,993.20
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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.