Finding the Fourth Proportional to 21,318,913.20, 31,971,208.86 and 6,938,598.99
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Solution
The fourth proportional to 21,318,913.20, 31,971,208.86 and 6,938,598.99 is: 10,405,567.84
Step by Step Solution
- Step 1: Write the proportion equation
21,318,913.20 : 31,971,208.86 = 6,938,598.99 : x - Step 2: Convert to fraction form
21,318,913.20/31,971,208.86 = 6,938,598.99/x - Step 3: Cross multiply
21,318,913.20x = 31,971,208.86 × 6,938,598.99 - Step 4: Simplify right side
21,318,913.20x = 221,835,397,505,075.06 - Step 5: Solve for x
x = 221,835,397,505,075.06/21,318,913.20 - Step 6: Final answer
x = 10,405,567.84
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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.