Finding the Fourth Proportional to 18,021,142.44, 27,031,695.84 and 7,238,445.12
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Solution
The fourth proportional to 18,021,142.44, 27,031,695.84 and 7,238,445.12 is: 10,857,660.52
Step by Step Solution
- Step 1: Write the proportion equation
18,021,142.44 : 27,031,695.84 = 7,238,445.12 : x - Step 2: Convert to fraction form
18,021,142.44/27,031,695.84 = 7,238,445.12/x - Step 3: Cross multiply
18,021,142.44x = 27,031,695.84 × 7,238,445.12 - Step 4: Simplify right side
18,021,142.44x = 195,667,446,838,372.31 - Step 5: Solve for x
x = 195,667,446,838,372.31/18,021,142.44 - Step 6: Final answer
x = 10,857,660.52
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1.5x scale
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.