Finding the Fourth Proportional to 15,571,839.12, 21,489,752.64 and 8,956,417
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Solution
The fourth proportional to 15,571,839.12, 21,489,752.64 and 8,956,417 is: 12,360,208.99
Step by Step Solution
- Step 1: Write the proportion equation
15,571,839.12 : 21,489,752.64 = 8,956,417 : x - Step 2: Convert to fraction form
15,571,839.12/21,489,752.64 = 8,956,417/x - Step 3: Cross multiply
15,571,839.12x = 21,489,752.64 × 8,956,417 - Step 4: Simplify right side
15,571,839.12x = 192,471,185,870,690.88 - Step 5: Solve for x
x = 192,471,185,870,690.88/15,571,839.12 - Step 6: Final answer
x = 12,360,208.99
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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.