Finding the Fourth Proportional to 21,686,245.83, 29,926,844.60 and 11,763,103.91
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Solution
The fourth proportional to 21,686,245.83, 29,926,844.60 and 11,763,103.91 is: 16,232,988.65
Step by Step Solution
- Step 1: Write the proportion equation
21,686,245.83 : 29,926,844.60 = 11,763,103.91 : x - Step 2: Convert to fraction form
21,686,245.83/29,926,844.60 = 11,763,103.91/x - Step 3: Cross multiply
21,686,245.83x = 29,926,844.60 × 11,763,103.91 - Step 4: Simplify right side
21,686,245.83x = 352,032,582,519,772.62 - Step 5: Solve for x
x = 352,032,582,519,772.62/21,686,245.83 - Step 6: Final answer
x = 16,232,988.65
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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.