Finding the Fourth Proportional to 15,520,440.07, 21,417,181.99 and 9,321,803.42
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Solution
The fourth proportional to 15,520,440.07, 21,417,181.99 and 9,321,803.42 is: 12,863,472.90
Step by Step Solution
- Step 1: Write the proportion equation
15,520,440.07 : 21,417,181.99 = 9,321,803.42 : x - Step 2: Convert to fraction form
15,520,440.07/21,417,181.99 = 9,321,803.42/x - Step 3: Cross multiply
15,520,440.07x = 21,417,181.99 × 9,321,803.42 - Step 4: Simplify right side
15,520,440.07x = 199,646,760,290,318.50 - Step 5: Solve for x
x = 199,646,760,290,318.50/15,520,440.07 - Step 6: Final answer
x = 12,863,472.90
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1.5x scale
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.