Finding the Fourth Proportional to 19,989,982.20, 29,986,803.24 and 5,612,953.08
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Solution
The fourth proportional to 19,989,982.20, 29,986,803.24 and 5,612,953.08 is: 8,419,943.45
Step by Step Solution
- Step 1: Write the proportion equation
19,989,982.20 : 29,986,803.24 = 5,612,953.08 : x - Step 2: Convert to fraction form
19,989,982.20/29,986,803.24 = 5,612,953.08/x - Step 3: Cross multiply
19,989,982.20x = 29,986,803.24 × 5,612,953.08 - Step 4: Simplify right side
19,989,982.20x = 168,314,519,605,311.97 - Step 5: Solve for x
x = 168,314,519,605,311.97/19,989,982.20 - Step 6: Final answer
x = 8,419,943.45
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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.