Finding the Fourth Proportional to 15,189,159.96, 20,960,964.36 and 8,219,832.48
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Solution
The fourth proportional to 15,189,159.96, 20,960,964.36 and 8,219,832.48 is: 11,343,327.49
Step by Step Solution
- Step 1: Write the proportion equation
15,189,159.96 : 20,960,964.36 = 8,219,832.48 : x - Step 2: Convert to fraction form
15,189,159.96/20,960,964.36 = 8,219,832.48/x - Step 3: Cross multiply
15,189,159.96x = 20,960,964.36 × 8,219,832.48 - Step 4: Simplify right side
15,189,159.96x = 172,295,615,658,450.41 - Step 5: Solve for x
x = 172,295,615,658,450.41/15,189,159.96 - Step 6: Final answer
x = 11,343,327.49
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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.