Finding the Fourth Proportional to 21,270,246.63, 31,906,026.21 and 8,315,880.18
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Solution
The fourth proportional to 21,270,246.63, 31,906,026.21 and 8,315,880.18 is: 12,474,076.85
Step by Step Solution
- Step 1: Write the proportion equation
21,270,246.63 : 31,906,026.21 = 8,315,880.18 : x - Step 2: Convert to fraction form
21,270,246.63/31,906,026.21 = 8,315,880.18/x - Step 3: Cross multiply
21,270,246.63x = 31,906,026.21 × 8,315,880.18 - Step 4: Simplify right side
21,270,246.63x = 265,326,690,982,299.53 - Step 5: Solve for x
x = 265,326,690,982,299.53/21,270,246.63 - Step 6: Final answer
x = 12,474,076.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.