Finding the Fourth Proportional to 15,193,899.42, 20,967,642.63 and 8,319,021.18
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Solution
The fourth proportional to 15,193,899.42, 20,967,642.63 and 8,319,021.18 is: 11,480,282.86
Step by Step Solution
- Step 1: Write the proportion equation
15,193,899.42 : 20,967,642.63 = 8,319,021.18 : x - Step 2: Convert to fraction form
15,193,899.42/20,967,642.63 = 8,319,021.18/x - Step 3: Cross multiply
15,193,899.42x = 20,967,642.63 × 8,319,021.18 - Step 4: Simplify right side
15,193,899.42x = 174,430,263,133,640.88 - Step 5: Solve for x
x = 174,430,263,133,640.88/15,193,899.42 - Step 6: Final answer
x = 11,480,282.86
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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.