Finding the Fourth Proportional to 20,782,295.98, 28,678,330.94 and 11,489,309.26
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Solution
The fourth proportional to 20,782,295.98, 28,678,330.94 and 11,489,309.26 is: 15,854,562.63
Step by Step Solution
- Step 1: Write the proportion equation
20,782,295.98 : 28,678,330.94 = 11,489,309.26 : x - Step 2: Convert to fraction form
20,782,295.98/28,678,330.94 = 11,489,309.26/x - Step 3: Cross multiply
20,782,295.98x = 28,678,330.94 × 11,489,309.26 - Step 4: Simplify right side
20,782,295.98x = 329,494,213,101,144.12 - Step 5: Solve for x
x = 329,494,213,101,144.12/20,782,295.98 - Step 6: Final answer
x = 15,854,562.63
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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.