Finding the Fourth Proportional to 21,531,121.13, 29,712,994.16 and 12,238,748.12
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Solution
The fourth proportional to 21,531,121.13, 29,712,994.16 and 12,238,748.12 is: 16,889,499.12
Step by Step Solution
- Step 1: Write the proportion equation
21,531,121.13 : 29,712,994.16 = 12,238,748.12 : x - Step 2: Convert to fraction form
21,531,121.13/29,712,994.16 = 12,238,748.12/x - Step 3: Cross multiply
21,531,121.13x = 29,712,994.16 × 12,238,748.12 - Step 4: Simplify right side
21,531,121.13x = 363,649,851,415,270.94 - Step 5: Solve for x
x = 363,649,851,415,270.94/21,531,121.13 - Step 6: Final answer
x = 16,889,499.12
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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.