Finding the Fourth Proportional to 21,318,933.57, 31,971,239.74 and 6,938,619.49
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Solution
The fourth proportional to 21,318,933.57, 31,971,239.74 and 6,938,619.49 is: 10,405,598.69
Step by Step Solution
- Step 1: Write the proportion equation
21,318,933.57 : 31,971,239.74 = 6,938,619.49 : x - Step 2: Convert to fraction form
21,318,933.57/31,971,239.74 = 6,938,619.49/x - Step 3: Cross multiply
21,318,933.57x = 31,971,239.74 × 6,938,619.49 - Step 4: Simplify right side
21,318,933.57x = 221,836,267,179,426.53 - Step 5: Solve for x
x = 221,836,267,179,426.53/21,318,933.57 - Step 6: Final answer
x = 10,405,598.69
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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.