Finding the Fourth Proportional to 21,373,923.36, 31,985,203.50 and 13,290,705.48
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Solution
The fourth proportional to 21,373,923.36, 31,985,203.50 and 13,290,705.48 is: 19,888,998.02
Step by Step Solution
- Step 1: Write the proportion equation
21,373,923.36 : 31,985,203.50 = 13,290,705.48 : x - Step 2: Convert to fraction form
21,373,923.36/31,985,203.50 = 13,290,705.48/x - Step 3: Cross multiply
21,373,923.36x = 31,985,203.50 × 13,290,705.48 - Step 4: Simplify right side
21,373,923.36x = 425,105,919,436,365.19 - Step 5: Solve for x
x = 425,105,919,436,365.19/21,373,923.36 - Step 6: Final answer
x = 19,888,998.02
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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.