Finding the Fourth Proportional to 21,317,946.80, 29,428,373.88 and 13,593,372.08
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Solution
The fourth proportional to 21,317,946.80, 29,428,373.88 and 13,593,372.08 is: 18,764,979.56
Step by Step Solution
- Step 1: Write the proportion equation
21,317,946.80 : 29,428,373.88 = 13,593,372.08 : x - Step 2: Convert to fraction form
21,317,946.80/29,428,373.88 = 13,593,372.08/x - Step 3: Cross multiply
21,317,946.80x = 29,428,373.88 × 13,593,372.08 - Step 4: Simplify right side
21,317,946.80x = 400,030,835,860,193.25 - Step 5: Solve for x
x = 400,030,835,860,193.25/21,317,946.80 - Step 6: Final answer
x = 18,764,979.56
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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.