Finding the Fourth Proportional to 19,319,616.80, 28,979,425.20 and 10,361,664.80
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Solution
The fourth proportional to 19,319,616.80, 28,979,425.20 and 10,361,664.80 is: 15,542,497.20
Step by Step Solution
- Step 1: Write the proportion equation
19,319,616.80 : 28,979,425.20 = 10,361,664.80 : x - Step 2: Convert to fraction form
19,319,616.80/28,979,425.20 = 10,361,664.80/x - Step 3: Cross multiply
19,319,616.80x = 28,979,425.20 × 10,361,664.80 - Step 4: Simplify right side
19,319,616.80x = 300,275,090,019,073 - Step 5: Solve for x
x = 300,275,090,019,073/19,319,616.80 - Step 6: Final answer
x = 15,542,497.20
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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.