Finding the Fourth Proportional to 28,928,418.84, 39,918,579.57 and 17,165,660.40
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Solution
The fourth proportional to 28,928,418.84, 39,918,579.57 and 17,165,660.40 is: 23,687,045.75
Step by Step Solution
- Step 1: Write the proportion equation
28,928,418.84 : 39,918,579.57 = 17,165,660.40 : x - Step 2: Convert to fraction form
28,928,418.84/39,918,579.57 = 17,165,660.40/x - Step 3: Cross multiply
28,928,418.84x = 39,918,579.57 × 17,165,660.40 - Step 4: Simplify right side
28,928,418.84x = 685,228,780,548,998 - Step 5: Solve for x
x = 685,228,780,548,998/28,928,418.84 - Step 6: Final answer
x = 23,687,045.75
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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.