Finding the Fourth Proportional to 21,288,986.24, 29,378,796.49 and 11,499,430.53
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Solution
The fourth proportional to 21,288,986.24, 29,378,796.49 and 11,499,430.53 is: 15,869,211.68
Step by Step Solution
- Step 1: Write the proportion equation
21,288,986.24 : 29,378,796.49 = 11,499,430.53 : x - Step 2: Convert to fraction form
21,288,986.24/29,378,796.49 = 11,499,430.53/x - Step 3: Cross multiply
21,288,986.24x = 29,378,796.49 × 11,499,430.53 - Step 4: Simplify right side
21,288,986.24x = 337,839,429,087,371.69 - Step 5: Solve for x
x = 337,839,429,087,371.69/21,288,986.24 - Step 6: Final answer
x = 15,869,211.68
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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.