Finding the Fourth Proportional to 21,563,769.28, 29,742,899.99 and 14,591,377.53
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Solution
The fourth proportional to 21,563,769.28, 29,742,899.99 and 14,591,377.53 is: 20,125,882.31
Step by Step Solution
- Step 1: Write the proportion equation
21,563,769.28 : 29,742,899.99 = 14,591,377.53 : x - Step 2: Convert to fraction form
21,563,769.28/29,742,899.99 = 14,591,377.53/x - Step 3: Cross multiply
21,563,769.28x = 29,742,899.99 × 14,591,377.53 - Step 4: Simplify right side
21,563,769.28x = 433,989,882,710,880 - Step 5: Solve for x
x = 433,989,882,710,880/21,563,769.28 - Step 6: Final answer
x = 20,125,882.31
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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.