Finding the Fourth Proportional to 19,868,804.80, 29,803,207.20 and 13,482,116.80
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Solution
The fourth proportional to 19,868,804.80, 29,803,207.20 and 13,482,116.80 is: 20,223,175.20
Step by Step Solution
- Step 1: Write the proportion equation
19,868,804.80 : 29,803,207.20 = 13,482,116.80 : x - Step 2: Convert to fraction form
19,868,804.80/29,803,207.20 = 13,482,116.80/x - Step 3: Cross multiply
19,868,804.80x = 29,803,207.20 × 13,482,116.80 - Step 4: Simplify right side
19,868,804.80x = 401,810,320,485,001 - Step 5: Solve for x
x = 401,810,320,485,001/19,868,804.80 - Step 6: Final answer
x = 20,223,175.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.