Finding the Fourth Proportional to 19,989,967.65, 29,986,781.36 and 5,612,938.46
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Solution
The fourth proportional to 19,989,967.65, 29,986,781.36 and 5,612,938.46 is: 8,419,921.50
Step by Step Solution
- Step 1: Write the proportion equation
19,989,967.65 : 29,986,781.36 = 5,612,938.46 : x - Step 2: Convert to fraction form
19,989,967.65/29,986,781.36 = 5,612,938.46/x - Step 3: Cross multiply
19,989,967.65x = 29,986,781.36 × 5,612,938.46 - Step 4: Simplify right side
19,989,967.65x = 168,313,958,387,155.09 - Step 5: Solve for x
x = 168,313,958,387,155.09/19,989,967.65 - Step 6: Final answer
x = 8,419,921.50
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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.