Finding the Fourth Proportional to 21,010,859.84, 29,008,480.92 and 13,181,106.80
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Solution
The fourth proportional to 21,010,859.84, 29,008,480.92 and 13,181,106.80 is: 18,198,393.02
Step by Step Solution
- Step 1: Write the proportion equation
21,010,859.84 : 29,008,480.92 = 13,181,106.80 : x - Step 2: Convert to fraction form
21,010,859.84/29,008,480.92 = 13,181,106.80/x - Step 3: Cross multiply
21,010,859.84x = 29,008,480.92 × 13,181,106.80 - Step 4: Simplify right side
21,010,859.84x = 382,363,885,112,282.31 - Step 5: Solve for x
x = 382,363,885,112,282.31/21,010,859.84 - Step 6: Final answer
x = 18,198,393.02
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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.