Finding the Fourth Proportional to 21,581,485.74, 29,782,403.46 and 11,791,999.62
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Solution
The fourth proportional to 21,581,485.74, 29,782,403.46 and 11,791,999.62 is: 16,272,933.87
Step by Step Solution
- Step 1: Write the proportion equation
21,581,485.74 : 29,782,403.46 = 11,791,999.62 : x - Step 2: Convert to fraction form
21,581,485.74/29,782,403.46 = 11,791,999.62/x - Step 3: Cross multiply
21,581,485.74x = 29,782,403.46 × 11,791,999.62 - Step 4: Simplify right side
21,581,485.74x = 351,194,090,283,006.69 - Step 5: Solve for x
x = 351,194,090,283,006.69/21,581,485.74 - Step 6: Final answer
x = 16,272,933.87
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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.