Finding the Fourth Proportional to 28,471,620.56, 39,290,640.73 and 15,418,580.76
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Solution
The fourth proportional to 28,471,620.56, 39,290,640.73 and 15,418,580.76 is: 21,277,535.50
Step by Step Solution
- Step 1: Write the proportion equation
28,471,620.56 : 39,290,640.73 = 15,418,580.76 : x - Step 2: Convert to fraction form
28,471,620.56/39,290,640.73 = 15,418,580.76/x - Step 3: Cross multiply
28,471,620.56x = 39,290,640.73 × 15,418,580.76 - Step 4: Simplify right side
28,471,620.56x = 605,805,917,169,103.88 - Step 5: Solve for x
x = 605,805,917,169,103.88/28,471,620.56 - Step 6: Final answer
x = 21,277,535.50
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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.