Finding the Fourth Proportional to 28,667,916, 39,561,726.24 and 15,790,860
Calculator
Solution
The fourth proportional to 28,667,916, 39,561,726.24 and 15,790,860 is: 21,791,387.99
Step by Step Solution
- Step 1: Write the proportion equation
28,667,916 : 39,561,726.24 = 15,790,860 : x - Step 2: Convert to fraction form
28,667,916/39,561,726.24 = 15,790,860/x - Step 3: Cross multiply
28,667,916x = 39,561,726.24 × 15,790,860 - Step 4: Simplify right side
28,667,916x = 624,713,680,414,166.38 - Step 5: Solve for x
x = 624,713,680,414,166.38/28,667,916 - Step 6: Final answer
x = 21,791,387.99
Related Problems
Find fourth proportional to 14,333,958, 19,780,863.12 and 7,895,430
Half scale
Find fourth proportional to 57,335,832, 79,123,452.48 and 31,581,720
Double scale
Find fourth proportional to 28,667,917, 39,561,727.62 and 15,790,861
Similar ratio
Find fourth proportional to 43,001,874, 59,342,589.36 and 23,686,290
1.5x scale
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.