Finding the Fourth Proportional to 21,902,995.08, 30,229,925.96 and 13,201,177.64
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Solution
The fourth proportional to 21,902,995.08, 30,229,925.96 and 13,201,177.64 is: 18,219,911.07
Step by Step Solution
- Step 1: Write the proportion equation
21,902,995.08 : 30,229,925.96 = 13,201,177.64 : x - Step 2: Convert to fraction form
21,902,995.08/30,229,925.96 = 13,201,177.64/x - Step 3: Cross multiply
21,902,995.08x = 30,229,925.96 × 13,201,177.64 - Step 4: Simplify right side
21,902,995.08x = 399,070,622,523,860.81 - Step 5: Solve for x
x = 399,070,622,523,860.81/21,902,995.08 - Step 6: Final answer
x = 18,219,911.07
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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.