Finding the Fourth Proportional to 20,756,151.09, 28,643,763.15 and 11,463,692.99
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Solution
The fourth proportional to 20,756,151.09, 28,643,763.15 and 11,463,692.99 is: 15,820,048.01
Step by Step Solution
- Step 1: Write the proportion equation
20,756,151.09 : 28,643,763.15 = 11,463,692.99 : x - Step 2: Convert to fraction form
20,756,151.09/28,643,763.15 = 11,463,692.99/x - Step 3: Cross multiply
20,756,151.09x = 28,643,763.15 × 11,463,692.99 - Step 4: Simplify right side
20,756,151.09x = 328,363,306,686,656.44 - Step 5: Solve for x
x = 328,363,306,686,656.44/20,756,151.09 - Step 6: Final answer
x = 15,820,048.01
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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.