Finding the Fourth Proportional to 13,680,276.60, 18,877,122.18 and 7,880,935.80
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Solution
The fourth proportional to 13,680,276.60, 18,877,122.18 and 7,880,935.80 is: 10,874,735.38
Step by Step Solution
- Step 1: Write the proportion equation
13,680,276.60 : 18,877,122.18 = 7,880,935.80 : x - Step 2: Convert to fraction form
13,680,276.60/18,877,122.18 = 7,880,935.80/x - Step 3: Cross multiply
13,680,276.60x = 18,877,122.18 × 7,880,935.80 - Step 4: Simplify right side
13,680,276.60x = 148,769,387,989,336.03 - Step 5: Solve for x
x = 148,769,387,989,336.03/13,680,276.60 - Step 6: Final answer
x = 10,874,735.38
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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.