Finding the Fourth Proportional to 20,269,867.87, 27,972,781.14 and 11,101,920.13
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Solution
The fourth proportional to 20,269,867.87, 27,972,781.14 and 11,101,920.13 is: 15,320,848.86
Step by Step Solution
- Step 1: Write the proportion equation
20,269,867.87 : 27,972,781.14 = 11,101,920.13 : x - Step 2: Convert to fraction form
20,269,867.87/27,972,781.14 = 11,101,920.13/x - Step 3: Cross multiply
20,269,867.87x = 27,972,781.14 × 11,101,920.13 - Step 4: Simplify right side
20,269,867.87x = 310,551,582,030,250.38 - Step 5: Solve for x
x = 310,551,582,030,250.38/20,269,867.87 - Step 6: Final answer
x = 15,320,848.86
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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.