Finding the Fourth Proportional to 15,313,827.27, 21,133,532.42 and 8,438,752.20
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Solution
The fourth proportional to 15,313,827.27, 21,133,532.42 and 8,438,752.20 is: 11,645,726.44
Step by Step Solution
- Step 1: Write the proportion equation
15,313,827.27 : 21,133,532.42 = 8,438,752.20 : x - Step 2: Convert to fraction form
15,313,827.27/21,133,532.42 = 8,438,752.20/x - Step 3: Cross multiply
15,313,827.27x = 21,133,532.42 × 8,438,752.20 - Step 4: Simplify right side
15,313,827.27x = 178,340,643,203,046.31 - Step 5: Solve for x
x = 178,340,643,203,046.31/15,313,827.27 - Step 6: Final answer
x = 11,645,726.44
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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.