Finding the Fourth Proportional to 21,019,739.99, 29,008,101.99 and 13,281,959.03
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Solution
The fourth proportional to 21,019,739.99, 29,008,101.99 and 13,281,959.03 is: 18,329,647.39
Step by Step Solution
- Step 1: Write the proportion equation
21,019,739.99 : 29,008,101.99 = 13,281,959.03 : x - Step 2: Convert to fraction form
21,019,739.99/29,008,101.99 = 13,281,959.03/x - Step 3: Cross multiply
21,019,739.99x = 29,008,101.99 × 13,281,959.03 - Step 4: Simplify right side
21,019,739.99x = 385,284,422,169,241.44 - Step 5: Solve for x
x = 385,284,422,169,241.44/21,019,739.99 - Step 6: Final answer
x = 18,329,647.39
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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.