Finding the Fourth Proportional to 19,321,972.80, 29,001,621.60 and 11,763,700.80
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Solution
The fourth proportional to 19,321,972.80, 29,001,621.60 and 11,763,700.80 is: 17,656,913.34
Step by Step Solution
- Step 1: Write the proportion equation
19,321,972.80 : 29,001,621.60 = 11,763,700.80 : x - Step 2: Convert to fraction form
19,321,972.80/29,001,621.60 = 11,763,700.80/x - Step 3: Cross multiply
19,321,972.80x = 29,001,621.60 × 11,763,700.80 - Step 4: Simplify right side
19,321,972.80x = 341,166,399,217,217.31 - Step 5: Solve for x
x = 341,166,399,217,217.31/19,321,972.80 - Step 6: Final answer
x = 17,656,913.34
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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.