Finding the Fourth Proportional to 20,369,334.24, 28,109,120.40 and 11,201,976
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Solution
The fourth proportional to 20,369,334.24, 28,109,120.40 and 11,201,976 is: 15,458,418.44
Step by Step Solution
- Step 1: Write the proportion equation
20,369,334.24 : 28,109,120.40 = 11,201,976 : x - Step 2: Convert to fraction form
20,369,334.24/28,109,120.40 = 11,201,976/x - Step 3: Cross multiply
20,369,334.24x = 28,109,120.40 × 11,201,976 - Step 4: Simplify right side
20,369,334.24x = 314,877,692,101,910.38 - Step 5: Solve for x
x = 314,877,692,101,910.38/20,369,334.24 - Step 6: Final answer
x = 15,458,418.44
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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.