Finding the Fourth Proportional to 21,166,684.74, 29,222,547.96 and 13,332,911.88
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Solution
The fourth proportional to 21,166,684.74, 29,222,547.96 and 13,332,911.88 is: 18,407,306.66
Step by Step Solution
- Step 1: Write the proportion equation
21,166,684.74 : 29,222,547.96 = 13,332,911.88 : x - Step 2: Convert to fraction form
21,166,684.74/29,222,547.96 = 13,332,911.88/x - Step 3: Cross multiply
21,166,684.74x = 29,222,547.96 × 13,332,911.88 - Step 4: Simplify right side
21,166,684.74x = 389,621,657,019,336.75 - Step 5: Solve for x
x = 389,621,657,019,336.75/21,166,684.74 - Step 6: Final answer
x = 18,407,306.66
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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.