Finding the Fourth Proportional to 20,033,518.11, 27,645,983.67 and 11,212,966.75
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Solution
The fourth proportional to 20,033,518.11, 27,645,983.67 and 11,212,966.75 is: 15,473,742.25
Step by Step Solution
- Step 1: Write the proportion equation
20,033,518.11 : 27,645,983.67 = 11,212,966.75 : x - Step 2: Convert to fraction form
20,033,518.11/27,645,983.67 = 11,212,966.75/x - Step 3: Cross multiply
20,033,518.11x = 27,645,983.67 × 11,212,966.75 - Step 4: Simplify right side
20,033,518.11x = 309,993,495,662,753 - Step 5: Solve for x
x = 309,993,495,662,753/20,033,518.11 - Step 6: Final answer
x = 15,473,742.25
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1.5x scale
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.