Finding the Fourth Proportional to 21,563,770.28, 29,742,901.37 and 14,591,378.53
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Solution
The fourth proportional to 21,563,770.28, 29,742,901.37 and 14,591,378.53 is: 20,125,883.69
Step by Step Solution
- Step 1: Write the proportion equation
21,563,770.28 : 29,742,901.37 = 14,591,378.53 : x - Step 2: Convert to fraction form
21,563,770.28/29,742,901.37 = 14,591,378.53/x - Step 3: Cross multiply
21,563,770.28x = 29,742,901.37 × 14,591,378.53 - Step 4: Simplify right side
21,563,770.28x = 433,989,932,470,125.56 - Step 5: Solve for x
x = 433,989,932,470,125.56/21,563,770.28 - Step 6: Final answer
x = 20,125,883.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.