Finding the Fourth Proportional to 28,636,135.28, 39,517,873.12 and 15,759,079.28
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Solution
The fourth proportional to 28,636,135.28, 39,517,873.12 and 15,759,079.28 is: 21,747,532.95
Step by Step Solution
- Step 1: Write the proportion equation
28,636,135.28 : 39,517,873.12 = 15,759,079.28 : x - Step 2: Convert to fraction form
28,636,135.28/39,517,873.12 = 15,759,079.28/x - Step 3: Cross multiply
28,636,135.28x = 39,517,873.12 × 15,759,079.28 - Step 4: Simplify right side
28,636,135.28x = 622,765,295,475,060.88 - Step 5: Solve for x
x = 622,765,295,475,060.88/28,636,135.28 - Step 6: Final answer
x = 21,747,532.95
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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.