Finding the Fourth Proportional to 28,636,125.75, 39,517,860.02 and 15,759,069.75
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Solution
The fourth proportional to 28,636,125.75, 39,517,860.02 and 15,759,069.75 is: 21,747,519.82
Step by Step Solution
- Step 1: Write the proportion equation
28,636,125.75 : 39,517,860.02 = 15,759,069.75 : x - Step 2: Convert to fraction form
28,636,125.75/39,517,860.02 = 15,759,069.75/x - Step 3: Cross multiply
28,636,125.75x = 39,517,860.02 × 15,759,069.75 - Step 4: Simplify right side
28,636,125.75x = 622,764,712,347,121 - Step 5: Solve for x
x = 622,764,712,347,121/28,636,125.75 - Step 6: Final answer
x = 21,747,519.82
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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.