Finding the Fourth Proportional to 13,392,946.70, 18,486,199.85 and 8,747,441.92
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Solution
The fourth proportional to 13,392,946.70, 18,486,199.85 and 8,747,441.92 is: 12,074,038.91
Step by Step Solution
- Step 1: Write the proportion equation
13,392,946.70 : 18,486,199.85 = 8,747,441.92 : x - Step 2: Convert to fraction form
13,392,946.70/18,486,199.85 = 8,747,441.92/x - Step 3: Cross multiply
13,392,946.70x = 18,486,199.85 × 8,747,441.92 - Step 4: Simplify right side
13,392,946.70x = 161,706,959,509,387.72 - Step 5: Solve for x
x = 161,706,959,509,387.72/13,392,946.70 - Step 6: Final answer
x = 12,074,038.91
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1.5x scale
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.