Finding the Fourth Proportional to 14,990,721.42, 20,687,262.67 and 8,115,203.49
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Solution
The fourth proportional to 14,990,721.42, 20,687,262.67 and 8,115,203.49 is: 11,199,017.15
Step by Step Solution
- Step 1: Write the proportion equation
14,990,721.42 : 20,687,262.67 = 8,115,203.49 : x - Step 2: Convert to fraction form
14,990,721.42/20,687,262.67 = 8,115,203.49/x - Step 3: Cross multiply
14,990,721.42x = 20,687,262.67 × 8,115,203.49 - Step 4: Simplify right side
14,990,721.42x = 167,881,346,218,130.75 - Step 5: Solve for x
x = 167,881,346,218,130.75/14,990,721.42 - Step 6: Final answer
x = 11,199,017.15
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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.