Finding the Fourth Proportional to 15,124,719.80, 22,687,079.70 and 12,467,514.80
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Solution
The fourth proportional to 15,124,719.80, 22,687,079.70 and 12,467,514.80 is: 18,701,272.20
Step by Step Solution
- Step 1: Write the proportion equation
15,124,719.80 : 22,687,079.70 = 12,467,514.80 : x - Step 2: Convert to fraction form
15,124,719.80/22,687,079.70 = 12,467,514.80/x - Step 3: Cross multiply
15,124,719.80x = 22,687,079.70 × 12,467,514.80 - Step 4: Simplify right side
15,124,719.80x = 282,851,501,928,529.56 - Step 5: Solve for x
x = 282,851,501,928,529.56/15,124,719.80 - Step 6: Final answer
x = 18,701,272.20
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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.