Finding the Fourth Proportional to 15,700,515.21, 21,663,534.74 and 9,172,883.97
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Solution
The fourth proportional to 15,700,515.21, 21,663,534.74 and 9,172,883.97 is: 12,656,724.18
Step by Step Solution
- Step 1: Write the proportion equation
15,700,515.21 : 21,663,534.74 = 9,172,883.97 : x - Step 2: Convert to fraction form
15,700,515.21/21,663,534.74 = 9,172,883.97/x - Step 3: Cross multiply
15,700,515.21x = 21,663,534.74 × 9,172,883.97 - Step 4: Simplify right side
15,700,515.21x = 198,717,090,504,219.72 - Step 5: Solve for x
x = 198,717,090,504,219.72/15,700,515.21 - Step 6: Final answer
x = 12,656,724.18
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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.