Finding the Fourth Proportional to 21,318,914.20, 31,971,210.36 and 6,938,599.99
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Solution
The fourth proportional to 21,318,914.20, 31,971,210.36 and 6,938,599.99 is: 10,405,569.34
Step by Step Solution
- Step 1: Write the proportion equation
21,318,914.20 : 31,971,210.36 = 6,938,599.99 : x - Step 2: Convert to fraction form
21,318,914.20/31,971,210.36 = 6,938,599.99/x - Step 3: Cross multiply
21,318,914.20x = 31,971,210.36 × 6,938,599.99 - Step 4: Simplify right side
21,318,914.20x = 221,835,439,884,183.91 - Step 5: Solve for x
x = 221,835,439,884,183.91/21,318,914.20 - Step 6: Final answer
x = 10,405,569.34
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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.